[Taxacom] A question for GBIF regarding data harvests from iNaturalist

[Stephen Thorpe]

Hi Joe,
As you know, GBIF periodically harvests Research Grade observations from iNaturalist. What isn't quite clear, but which I think would be well worth clarifying, if you could, please, is what happens to observations which drop back out of Research Grade? Do they drop out of GBIF at the next harvest? This is important for the reason that there are two types of cases, and the consequences are very different for observations of each type: (1) observations of well-known species; and (2) observations reliant on expert IDs.
For type (1) observations, it can be reasonably assumed that dropping back out of RG will rarely happen, and if it does happen for inadequate reasons, then the community ID will be restored fairly quickly, since it involves a well-known species that many iNat users are familiar with.
For type (2) observations, however, IDs may be based on just a couple of experts. An RG observation of this kind can be dropped out of RG by any iNat user, who chooses to disagree for whatever reason, be it scientific or personal or whatever. The lack of further experts means that RG is likely not to be able to be restored very easily!
So, my question is, for type (2) observations that were RG long enough to have been harvested by GBIF, if they subsequently drop out of RG on iNat, do they drop out of GBIF at the next data harvest? If so, then data already in GBIF, harvested from iNat, is vulnerable to the whims of single users on iNat, which, to my mind at least, is a concern!
Cheers, Stephen