Problem with domain user and impersonate

Hi all,
I’ve setup nextcloud with domain users login , it work perfectly, now since I need to bulk move old data to nextcloud I have installed the impersonate app to connect as every user and load data.
The problem is that impersonate want that the first login is made by every user before I can use it.
I cannot ask to any user to login or to tell me their passwords or reset them , is there a way to simulate first login ?
I am domain admin and root on nextcloud.
Thank’s in advance,
marco.