The TMDb rule is to keep the oldest, the smallest ID.

OLD 0 https://www.themoviedb.org/person/207648-david-ross Wrong IMDB ID nm1193156
1998 Vanity Fair — (6 episodes) as Mr. Sedley Move to ID 1214783
1997 Cold Enough for Snow as Bevis Whittle Move to ID 1214783 MOVIE
1996 Eskimo Day as Bevis Move to ID 1214783 MOVIE
1988 Red Dwarf — (1 episode) as Talkie Toaster (voice) Move to ID 1214783
1986 Casualty — (1 episode) as Lenny Shines Move to ID ? ? ? ? ? ? Wrong Casualty correct 1993 1995 ???
1984 Scully — (7 episodes) as Steve Move to ID 1214783
1982 Boys from the Blackstuff — (5 episodes) Move to ID 1214783

new 1 https://www.themoviedb.org/person/1214783-david-ross IMDB ID nm0743335
IMDB https://www.imdb.com/name/nm0743335/

Move 2 movies OK
Move all tv show del 2 + move 1 OK
Check Casualty +1

We have many David Ross. I think those 2 are OK

@ticao2 said:

We have many David Ross. I think those 2 are OK

I think you are correct, 207648 is this guy.