Posting the observation of the same individual is fine, BUT… the information, that it was the same individual, will be lost, because database unfortunatelly doesn’t provide means to track individuals. @zoya_buckmire, I think you should at least add a link to the previous observation of the same individual to the comment field saying that it’s the same individual, so that this information isn’t lost.
Dear moderator @cthawley, please consider if iNaturalist could somehow track individual organisms… it wouldn’t be useful just for plants, but also for marked animals. I understand that the original purpose of the database is different, but this is worth considering. I know it would bring whole set of other issues to solve (who and how would validate if it was the same individual or not, would it be the first observer? With marks it would be easier… etc.)