IMDb staff: Updating a complete cast conundrum

Hullo, I have a bit of a strange conundrum here. Recently I acquired the complete, unedited, original broadcast versions of "Taggart" and I've tried updating the IMDb cast for those episodes accordingly to reflect all the actors who appeared in the episode. However, IMDb is not letting me do that claiming the cast is complete. HOWEVER, and here's the kicker, I am the person who originally completed that cast a few years ago using the credits from the cut DVD version. So, in essence, IMDb is not letting me update the information I myself added to the site. I will post the relevant screenshots from the credits below along with the reference numbers of my denied updates: #220928-235127-336000 #220929-000208-517000 #220929-011119-447000 (this one is a deletion but you can see that those actors supposedly credited after Elizabeth Millbank are not there) #220929-150048-260000 #220930-001354-184000 (this one is very hard to screenshot since it's a lot of deletions and the closing credits roll one by one but it's the same situation as the once above)