Wrong fields being read.
I just did the changes and auto-increment, and then inserted a new record to test.
The record that was inserted (ID =1789).
But when the record was saved, it somehow copied all information put In place by that with record ID =1176
And when I pushed the modify login option, it went straight to that same record.
It is possible I made an error running those queries, but I made a backup table in the database and can revert if necessary.