The updatesTag function is renaming the tags from the source to the target collection. This means that if a stepdown happens right after this call, the next time the operation will be resumed tags will be wiped out.

The removeTagsMetadataFromConfig_notIdempotent call is not needed at all. Due to the original design of the rename operation, there is no need to delete the target collection tags since the rename will result in an early failure in case the target collection has tags.