This has been discussed before, elsewhere, but I’ll take the chance to add it here. Duplicates with RG level status are rife. In the past curators often flagged one of records as a duplicate in order to strip the RG status and reduce it to “Casual”. Recently we’ve been instructed not to do this, as the flags can’t be resolved, so there needs to be another way of dealing with it. Direct appeal to the observer to combine & delete is, more often than not, ignored. It may be most effective to have a way to downgrade all of the records involved (‘original’ & dup) and have the observer then select which record they want as the primary observation that can reach RG or have it reinstated. This would elicit some action from the observer and hopefully reduce the incidence of dup submission. (I was going through one iNater’s observations a few hours ago and found that at least one third of their observations are dups, with one Madagascan observation having been submitted 7 times in total and all having reached RG.)
I should make it clear that I’m only referring to single observer dups, not “duplicates” (same individual organism, place & time) submitted by different observers.