After an initial migration is run, an incremental copy (also known as a delta migration) will copy any new and updated data from the source to the target.
There are three different methods to run an incremental copy from Metalogix Content Matrix:
·Incremental Copy Mode - Update Existing Objects option on the Migration Mode tab
The incremental copying option enables migrations that can preserve and update objects on the target of the migration. This mode is used when you just want to make sure nothing on the target gets overwritten. Only new objects that do not yet exist on the target are copied.
EXCEPTION: For lists and libraries with versioning enabled, any new versions that have been created since the initial migration will be copied to the target.
When this option is selected there are two options that are toggled. The first is the Preserve Item IDs option is enabled. The second is that the workflow copy options are turned off. This is because Incremental copies cannot be run on workflows.
·The Custom Copy option on the Migration Mode tab
The custom copy option allows you to run incremental copies for selected content. This option allows you to configure a mix of the Overwrite and the Incremental modes, meaning that incremental copies can be performed on select content in a migration, while allowing other content to be overwritten.
IMPORTANT: Preserving IDs on items/folders in Lists
When running an incremental copy the Preserve IDs on items/folders in Lists option must have been enabled in the original copy. This is so Metalogix Content Matrix can reference the item ID when looking to see if the items already exists on the target side. If this option was not selected, the incremental copy for SharePoint lists can return some strange results. Generally, in cases where this option was not selected, an incremental copy will create some duplicate content on the target for items it thinks are not in the list, even though they may be (but use a different item ID). The other possible consequence is that some data may be missing, because Metalogix Content Matrix may think that some data exists on the target, even though it may not (but the IDs may be in use). For more information on incremental copying and preserving IDs for SharePoint list items please see Preserving SharePoint List IDs with a CSOM Connection Type .
The preservation of Document ID/s is not an issue for incremental copying of SharePoint documents. Incremental copying for documents is referenced by the folder path/filename of the document instead of the item ID. Metalogix Content Matrix will look for the URL path of the document, and if found, will then compare the modified date between the original target document and the source document to see if any modifications have been made to the file. If any modifications are found, as compared to the target, these will be migrated to the target. If no file was found when looking back to the source/target URL path, then that document/folder will be added.
To perform an incremental copy using Migration mode:
2.On the Migration Mode tab, select Incremental copy.
When this option is selected:
§the Preserve Item IDs option is enabled, and
§the Workflow Copy Options is disabled. (Incremental copies cannot be run on workflows.)
REMINDER: When running an incremental copy the Preserve IDs on items/folders in Lists option must be enabled so that Metalogix Content Matrix can determine if the item already exists or if it has been updated. (When copying documents the folder path and document name are used instead.)
To perform an incremental migration job from an existing job:
1.In the Jobs List, select the job(s) for which you want to perform an incremental migration. (Use [Ctr] click to select multiple jobs.)
2.Right-click and choose Create incremental job.
NOTE: The new job will use the same name as the initial job with " Incrementally" appended to the end of the name
Metalogix Content Matrix can generate PowerShell scripts to be used to migrate SharePoint content through the PowerShell command window. Anything that can be done through the Metalogix Content Matrix Console User Interface (UI) can also be done though PowerShell, adding PowerShell capability to content migration.
PowerShell console shortcuts are added to the same Start Menu folder location where shortcuts to Metalogix Content Matrix consoles are placed after installation.
NOTE: If this option is not used to open PowerShell, see Configuring PowerShell for Use with Metalogix Content Matrix, to set up and configure the Metalogix PowerShell plug-ins and snap-ins.
Metalogix Content Matrix can run PowerShell commands after some initial PowerShell configuration. The following steps need to be performed one time only.
To run PowerShell commands with Metalogix Content Matrix:
1.Change the working directory of PowerShell to the installation directory of that Metalogix Content Matrix edition.
2.Register the Metalogix.SharePoint.Commands DLL.
3.Register the Metalogix.System.Commands DLL.
4.Register the Metalogix.SharePoint.Migration.Commands DLL.
5.Register the Metalogix.Jobs.Reporting.Commands DLL.
6.Add the PowerShell snap-ins for the Metalogix Application Framework. This step must be done each time you open and use PowerShell with Metalogix Content Matrix.