When copying a Nintex form to Microsoft 365, ShareGate Migrate displays the following warning message:

The form will not be published to Nintex Live at the destination because this feature is not available on Microsoft 365.

This warning occurs because the new destination form cannot be published to Nintex Live, because this functionality is not available on Microsoft 365.

Since Nintex Live is not available for Nintex Forms published to a Microsoft 365 site, users will no longer be able to fill the form using a simple URL like they previously did. They will need to login to your Microsoft 365 site and create an item in the list with which your form is associated.