[Other] Safe to patch already modified ROM with the PSS patch?

[Sakakii]

Hello I was wondering does anyone know if its safe to patch an edited FR ROM with this patch

https://www.pokecommunity.com/posts/7465618/

Or if it needs to be done on an unedited ROM.

 

[BirdstarCat13]

Hello I was wondering does anyone know if its safe to patch an edited FR ROM with this patch

https://www.pokecommunity.com/posts/7465618/

Or if it needs to be done on an unedited ROM.

I think that one can be applied to any ROM but you need to change the categories yourself.