Photoshop Mobile: Ability to save to iPadOS files

I love to have PS on my iPad, but I hate the same mistakes Apple did before. Now Apple opened up the Filesystem (hey! I can put my USB Stick in) .

Problem: on this usb Stick is a PS File and I can open it from that Stick, but WHY???? can I not save it directly to the same File??? So I have to put it in that complete unusefull Cloud-Storage and the I have to export it and...and ...and ... that‘s not a workflow! Frontmost it‘s not my workflow. I don‘t need several Iterations and Copys of my Files. It‘s PS: I do it inside the file.

so PLEASE: let me save the file I‘d opened. Then PS-mobile becomes really handy!