first you need fly which is at cleadon city then fly to fushia city and next to the Pokemon center there are two houses try them both and you desire what move should your Pokemon should forget
go to the move forgetter in fuschia city
There is a move deleter who can make pokemon forget HM moves.
You can just reteach it since HM are reusable.
Pokemon cannot forget HM's unless they're in Pokemon Mystery Dungeon. But, if its from Emerald, add another Pokemon to your party that knows surf and ask the move deleter.
surf is a hm. It is unlimited.
Go to the move deleter in Canalave City (that is the only way to delete HM moves.)
at canalave city there is a move deleter he is an old man
the move deleter is in canalave city in a house below the pkmn centerthere is a HM deleter in pastoria or in jubilife or in heatrome.
Go to the Move Deleter in Canalaeve City. He will make your Pokemon forget any moves and is the only way to forget HM moves. If you want a move back (not including TMs/Hms) go to the Move Relearner in Pastoria City with a Heart Scale, which can be found underground.
talk to the move deleter
There is a move deleter who can make pokemon forget HM moves.
you mest get the hm strength.
You can just reteach it since HM are reusable.
no their unforgetable
The move Rock Tomb is a TM, not a HM.
Yes you can trade them over but they won't be able to forget the HM moves until you find the move deleter.
go to cecilia city and go to the move deleter.
Find the move deleter.