Fortnite cross progression issues

I recently am getting back into Fortnite and my Playstation account is the account I use to transfer my cross progression to my PC account. I made a new online alias a while ago, and no longer want to play on my old account. I unlinked my Playstation account from the old Epic account and linked it to the new one (this one). Upon doing so, none of my Playstation progress transferred over to this account and instead stayed on my old account, even tho my Playstation account was the initial one to link my progression to my PC accounts. I’m not really sure what to do and just want my progression on this account, while taking it away from my old one.