Sorry: I should have been more explicit: that is what I meant by “not possible to select them”.
i.e. using the obs/user option does not cater for/honour the filter option “acc=”
Use the one view that works to see them. Export it to csv with the observation ID into csv and then import to excel or the spreadsheet of your choice.
Concatenate the observationid values into a comma separated string (remember the edit tool only takes 200 so do that at a time) . So you get a string like 1255353,62345,14557575 etc
Copy that concatenated string.
Go back to the view I wrote. Select any random 2 obs and go into batch edit. The url will now contain ?o=ob1,ob2 cut that and replace with the data in memory string from above. Edit away.