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Magento 2 Migration - Essential Guide from A to Z

Magento Migration (or migrating from Magento 1 to Magento 2) has been a tendency in recent years. This document will give everything you need to know about the Magento 2 Migration process (overview, process, planning, how it works, common mistakes, etc.). If you are a Magento store owner or a Magento developer, it would be very useful!

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Magento 2 Migration - Essential Guide from A to Z

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  1. MAGENTO 2 MIGRATION FROM A TO Z

  2. Overview When Magento 2 was first released, many people doubt about its stability and adaptability. Therefore, most of the e-commerce businesses choose to keep running on Magento 1 instead of taking risks.  However, since Magento 2 continues releasing many update versions with an array of attractive features and functions, better from time to time, migrating website to Magento 2 has become a hot controversy than ever.  Magento Migration process is actually to  “Build a new website on Magento 2 framework based on your Magento 1 site”

  3. Why Migrating Magento 1 to 2? More User- friendly Checkout Improved Performance Enhanced Security Better Admin Interface More Mobile- friendly Continuous Improvements

  4. MIGRATION PROCESS

  5. 4 Stages of Migration Process Data Migration Extensions Migration Code Migration Theme Migration

  6. Theme Migration Problem Solution You might want to continue using Magento 1 design template since all of your customers are too familiar with it. Recreate your Magento 1 theme: Creating a new Magento 2 design template that looks the same with your old version (based on your PSD files).   However, it’s unfortunate that we cannot migrate that theme to Magento 2.  Redesign the whole store: Why don’t you think this is a perfect time to refresh your store? By hiring a creative team of coders and designers, they will give you a more appealing and modern storefront but still stick on your brand image. 

  7. Code Migration Problem Solution In general, the majority of custom code used by your Magento 1 store is compatible with Magento 2. Therefore, to transfer it to the new version, you are optional to either rewrite or migrate the code. You need to create a detailed migration plan and follow it strictly to make sure that it meets the code standard and data integrity throughout the migration process.   The thing is that although Magento offers some available code migration tools, it still requires extreme work to ensure that these tools are successfully installed in your Magento 2 store. 

  8. Extension Migration Problem Solution Most of the Magento 1 extensions are not transferable to Magento 2 due to the code conflicts. Find those extensions with Magento 2 version: If your Magento 1 extensions have already developed with the same functions in Magento 2, you to can find and install them in your new store.   Develop new custom Magento 2 extensions for your store: In case there is no available Magento 2 version for your current Magento 1 extensions, you can hire a Magento extensions development agency to create a new one with the same functionality. 

  9. Data Migration Problem Solution Data Migration is the most crucial stage of the migration process. If your internal developers do the migration, be careful of data loss, especially customer data.   Though Magento allows us to transfer several types of data from your Magento 1 to Magento 2, this work is very complicated, which requires strenuous attempt and massive undertaking.  Otherwise, you can turn to a professional Magento agency to ensure a smooth data transference. 

  10. Create Migration Plan Step 1: Check the migration tool Step 2: Inspect your Magento 1 site Make sure that the data migration tool has a network connection to Magento 1 & 2 databases Review the existing extensions and decide what to migrate to the new site Check whether these extensions has Magento 2 versions Open ports in your firewall Define which database assets from these extensions to migrate Disable Magento 2 cron jobs Configure and map files

  11. Create Migration Plan Step 3: Make capacity plan Step 4: Set up & test Magento 2 site Determine to design the new Magento 2 store with more hardware or more advanced topology with better caching tiers Set up Magento 2 system Enhance migration performance by cutting down network latency Replicate Magento 1 database to create redundancy in the event of unpredictable issues

  12. Create Migration Plan Step 5: Start Magento 2 Migration Step 5: Start Magento 2 Migration Cease all activities in Magento 1 admin (order management and shipping are excluded) Do bulk copy of database Stop cron jobs of Magento 1 Reindex Magento 2 indexers Migrate settings and websites by utilizing the Magento migration tool Examine the new site Copy media assets from Magento 1 to 2

  13. Create Migration Plan Step 6: Deliver additional updates Step 7 : Scrutinize the new site and go live Update the customers, inventory, orders Start downtime and set Magento 1 site to maintenance mode Stop incremental updates Kick Magento 2 cron jobs off Reindex all Magento 2 indexers Conduct eventual verification Finish downtime by changing DNS and loading balancers

  14. How Migration Works Automatic Migration Manually Migration Both Magento 1 core tables and any custom tables that do not change between Magento 1 and Magento 2 are automatically migrated to Magento 2 with no action required. Extensions and custom code   Media (product images, WYGIWYS editor, etc.)  Storefront design (CSS, Javascript, templates, XML layouts)  Layouts (XML in CMS category pages & Layout updates)  Web services credentials (SOAP, XML- RPC, REST)  Notes: Don’t migrate Indexed data, Google shopping and Unsupported data in Magento 2 (poll, tag, staging module, etc.)

  15. MAGENTO MIGRATION COMMON ISSUES

  16. 1. Source documents/ fields are not mapped Source documents are not mapped: <EXTENSION_TABLE> Source fields are not mapped. Document: <EXTENSION_TABLE> Fields: <EXTENSION_FIELD> In rare cases, the message might mention Destination documents or Destination fields instead of source ones. Explanation Some Magento 1 entities (in most cases, coming from extensions) do not exist in the Magento 2 database.  This message appears because the Data Migration Tool runs internal tests to verify that tables and fields are consistent between source (Magento 1) and destination (Magento 2) databases. 

  17. 1. Source documents/ fields are not mapped Possible solutions Install the corresponding Magento 2 extensions from Magento Marketplace. If the conflicting data originates from an extension which adds own database structure elements, then the Magento 2 version of the same extension may add such elements to the destination (Magento 2) database, thus fixing the issue. Configure the Tool to ignore the problematic data. To ignore database entities, add the <ignore> tag to an entity in the map.xml file, like this: <ignore> <field>sales_order_address_id</field> </ignore> Before ignoring entities, make sure you do not need the affected data in your Magento 2 store.

  18. 2. Class does not exist but mentioned Class <extension/class_name> does not exist but mentioned in: <eav_attribute.frontend_model> ; for <attribute_id=196> Explanation A class from Magento 1 codebase could not be found in Magento 2 codebase during the EAV migration step. In most cases, the missing class belongs to an extension. Possible solutions Install the corresponding Magento 2 extension.  Ignore the attribute that causes the issue.  For this, add the attribute to the ignoregroup in the eav-attribute-groups.xml.dist  Add class mapping using the class-map.xml.dist 

  19. 3. Foreign key constraint fails Error message text Foreign key <KEY_NAME> ; constraint fails.Orphan records id: <id_1>, <id_2> from <child_table>.<field_id> has no referenced records in <parent_table> Explanation There are missing database records in the parent_table to which the field_id of the child_table is pointing to. Possible solution Delete the records from the child_table, if you do not need them.  To keep the records, disable the Data Integrity Step by modifying the Data Migration Tool’s config.xml. 

  20. 4. Duplicates in URL rewrites There are duplicates in URL rewrites: Request path: towel.html Store ID: 2 Target paths: catalog/product/view/id/10 Request path: towel.html Store ID: 2 Target paths: catalog/product/view/id/12 Explanation The Target path in a URL rewrite must be specified by a unique pair of Request path + Store ID. This error reports two entries that use the same Request path + Store ID pair with two different Target path values. Possible solution Enable the auto_resolve_urlrewrite_duplicates option in your config.xml file.  This configuration adds a hash-string to the conflicting records of URL rewrites, and shows the resolution result in your command line interface. 

  21. 5. Mismatch of entities Mismatch of entities in the document: <DOCUMENT> Explanation The error occurs during the Volume Check step. It means the Magento 2 database record count of the document is not the same as in Magento 1. Missing records happen when a customer places an order during migration. Solution Run the Data Migration Tool in Delta mode to transfer incremental changes.

  22. MIGRATION SERVICES

  23. Why hiring a Magento agency? Internal Staff vs Magento Agency • Less professional • Take more time • Higher risk of data loss during migration process • May cost even more • Less time to focus on more important things Magento 2 migration process takes a lot of time and effort since it is complex and requires plenty of customizations. This is the main reason why you should find a reputable Magento migration service provider to share your burden rather than do it yourself.

  24. Where to find a reliable Magento agency? Founded in 2011, specialized in Magento development Magento Certified Developers, 4-5-year experience on Magento on average Offer competitive pricing Guarantee a smooth & data loss-free Migration process with minimum lead time World-class customer service – 24/7/365 support Website: https://www.tigren.com/ Email: info@tigren.com Phone: (+84)1664988448

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