Content Matrix can migrate web parts for:

·landing pages (default.aspx pages)

·web part pages

·publishing content pages, and

·list view pages.

Web parts can be copied as part of a normal migration copy or as a separate action.  

NOTES:  

·Currently, If you are using Microsoft 365 OAuth with MFA Authentication, classic web parts can be migrated only if you are using the Import Pipeline.

·Modern web parts are copied as part of page metadata.

Essentially, Content Matrix reads the XML information of the web parts, processes the data, and moves it over to the target side, where the XML is then written out on the target location. Content Matrix will automatically perform link correction on the data within the web part (the data for the settings), as a part of the migration.

In order for any custom or third party web parts to be properly migrated, these web parts must be manually installed or created on the target server before migration. Content Matrix does not migrate the actual code of the web part, it only migrates the data within the web part. In order for an actual migration, the desired web part must first exist on the target SharePoint instance, otherwise the migration will fail.

Content Matrix can preserve web part views, however, there are a few known issues with this. In the case of list view web parts, you need to make sure that the list being referenced has already been migrated to the target to ensure that the web part, and it's view, will migrate properly. If the list being referenced in the web part is within the scope of the migration, then Content Matrix will make sure the list has been copied first, and will then copy web parts.

There is an additional web part view limitation when using the CSOM or Tenant connection adapter on the target, where Content Matrix is unable to set the type of a web part view. The most common manifestation of this is to have a web part lose its calendar appearance during migration. However, the other properties of that view will still be preserved. The resulting outcome will be that the content within the web part will be correct, but it will not look the same as the source because the view type is different. This can be corrected by manually, after migration, by changing the web part view to match the same web part view on the source.

NOTE:  In some cases the web part view type may migrate correctly. This can only occur if the web part is using the same view type that it was using when it was first created. However, this behavior is not reliable.

There is also a web part limitation on migrating web part connections. Web part connections are connections that exist between web parts (one web part pointing to another web part, etc.). Content Matrix is only able to migrate these web part connections if there is an OM connection type (through the use of the Local or Metalogix Extensions Web Service connections) on both the source and target SharePoint environments. Other connection types are unable to access this setting, meaning that if any other connection type is used on either the source or target, the web part connection setting cannot be preserved. This also means that this setting cannot be preserved when migrating to M365 environments.

You can use the Import Pipeline to migrate the classic web parts identified in the following table.

NOTE:  Classic web parts not supported by the Import Pipeline are migrated using CSOM.  However, if Web Part pages or Wiki pages contain non-supported web parts, these web parts will not be migrated.

NOTES:

·The same limitations with web part views and connections that apply to CSOM connections also apply when using the Import Pipeline.

·Some web parts require 'Allow Custom Script' setting enabled for the target tenant.  If this is not set at least 24 hours before migration, these web parts will not be migrated.  Refer to the Microsoft article Allow or prevent custom script for details on enabling this feature.

·Closed web parts on the source will be migrated as closed on the target.

When migrating to/from SharePoint 2013 or later (including SharePoint Online), Content Matrix will migrate some additional required components when preserving themes. In these versions there is a hidden list called "Composed Looks" that contains some of the Theme information, and this list also references the MasterPage Gallery for additional information. Content Matrix will also migrate the corresponding items from the "Composed Looks" and MasterPage Gallery. This will be done for each theme that is copied, so if only the current theme is copied, only the related item from the "Composed Looks" list and the related MasterPage Gallery item will be copied as well. If all themes are copied, then all items in the "Composed Looks" list and MasterPage Gallery will be copied.

Content Matrix can copy over site features and activate them as a part of a site level migration. Content Matrix does not actually copy over the feature itself, it only adds the feature to the target site and activates it.

In order for the feature to be added to the target site it must first be manually installed and available on the target server. If the features from the source do not exist on the target, the migration of features will fail, but the remaining content will continue to copy over.