There may be a requirement to migrate a folder having a name as “Forms” but, there is a hidden "Forms" folder already present in each SharePoint document library. The Forms folder is used by SharePoint to store document templates and it is a system-reserved name.

To overcome this, you can either rename that particular folder in the source system before migration or you can follow these steps to rename this folder during migration:

1) Click Folder to Folder Content Type Mapping settings in the migration task settings window:

2) Click on the "Title" field setting to use the below script:

3) Select the script mapping type, provide the name of the script, add the script provided below and then save it.

Script:

If($MigrationItem.SI.ItemName -eq "Forms")

{

return “Forms_”

}

else

{

return $MigrationItem.SI.ItemName

}