Moderators can reject any run, including runs that are already on the leaderboard. For this specific scenario, you should ask the mods how to approach it.

Hello, I had a question about verifying speedruns. What emulators are accepted for them and where to send them to. I am currently trying to run contra hardcorps and castlevania bloodlines on switch from each games collection. Would this be accepted? thanks!

https://www.speedrun.com/contra_hard_corps https://www.speedrun.com/castlevania_bloodlines