Hi @Nickson Gabriel
Per my konwledge, incremental migration is supported in SPMT.
You just need to take an incremental check of the SharePoint target environment is performed. Files are evaluated as follows:
For more information, you could refer to :
https://learn.microsoft.com/en-us/sharepointmigration/spmt-create-task#incremental-migration
What's more, through my test, if the files/folders in "server B" has the same file names with those in "server A", the files/folders will cover the previous.
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