Hm Learn Move Question

So. First post so sorry if this is obvious or dumb. So recently my Scolipede learned Rock Climb (by level up) and I want to know can it still be used to climb rocks? (Ex.) In Cyan Cavern you can rock climb to get an item. So if I went there could I still use Rock Climb to get said item? (Thank you in advance if you can give me an answer)

Unfortunately, I don’t believe so.

My friend tried and he said he lagged when climbing. He couldn’t get up or down. Just in middle struggling around.