OK, 100% new to any CNC, & mach program. I have read up on all I'm working with, & have managed to get my setup working.

My problem is:

I open Mach3 (trial version) & can set & configure everything to work great, but, upon closing & reopening, I lose all adjustments.

Have tried the following:

1: "Save Configuration" under the config menu
2: tried renaming one of the "xm#" files in the "past xml files" folder

And, just to clarify, I am working with a secondhand system. The PO had a working XML file that I'm working with, & upon close & reopen, I lose any changes.

Any and all help is greatly appreciated. I've done several searches, & haven't found anything of this nature.

edit:

Also to clarify, I'm trying to change settings for:
1: Steps per unit
2: slave axis