Symptoms
You get the following error on your list columns when copying a site tenant to tenant with different settings for the default language of the tenant, the supported languages of the destination site, and the display languages of your Microsoft 365 profile (in Delve):
The requested list or document library cannot be found. It may have been deleted.
Details
During the migration, SharePoint translates some of the properties, which prevents ShareGate Migrate from finding them to complete the operation.
You can remove all your display languages from your Microsoft Delve profile to resolve this issue.
Note: We recommend using a migration account and removing all the display languages from its Delve profile when migrating site collections in a multilingual environment.
How to remove all languages from your display languages in your Delve account
In Microsoft 365, click on your profile in the top-right corner. It will either have your profile picture or account initials.
Select My Microsoft 365 profile from the dropdown menu.
Click Update profile under your information at the left.
Select How can I change language and regional settings? at the bottom of the Contact information section.
Click the word here in the sentence that appears:
Click here, click the ellipsis (...), and then choose Language and Region.Click on the ellipsis (...) in the tab bar to expand the tab selection.
Select Language and Region from the dropdown.
Remove all the languages from My Display Languages.
Click Save all and close.
Wait for the setting to take effect (usually around 15 minutes).
Try your migration again.