Since I am not a very patient person at times (my time is limited due to health), what I do is email the PM letting them know what I am going to do with the profile and state I will be performing the action over the hours / days whichever it may be. Then let them know should they find any error or believe the changes should not be there, to reach out.
Merges are a bit different, I just use the merge request and then have to be patient for time to run out and someone to complete it.
So far those contacted have either been civil over the notifications or not responded.