TN Scale NFS share: Linux vs Windows

NFS share bc I have a Linux/Pi box. I wanted to Archive stuff from the Pi to the NAS/NFS.

On NFS share, I’ve used the Mapall User and Mapall Group.
The Pi is able to mount & write to the NFS share (permissions get mapped to the set NT/NFS/User.

However, if I try to access NFS from Win PowerShell via scp to copy NFS data to an SMB share (scp logged into the Pi), I get permission problems accessing/reading the NFS files.

Previously I used to use a QNAP NAS, where mixing NFS & SMB on same share was the normal method, although with conflicting access permissions.
I didn’t want to mix protocols on NT, so I was trying to separate Share / Protocol.

My current workaround is to use PowerShell scp to copy directly from the Pi to SMB (for backup). Bypassing & in effect, no longer using NFS at all.

I did notice that when I copied from Pi → NFS, cp had permission errors, no doubt to do with the Mapall/Mapping. The files WERE written in the end.

How do other NT admins handle a mixed protocol environment? Shares with mixed protocols?

Previously I tried to get Win/NFS working. I never got as far as a successful mount… Ergo trying scp from Windows.