G54 Loses Settings

Hi All,

Having an odd issue where switching from G54->G55->G54, Sometimes (Not always) overwrites G54 Coordinates with G55 Coordinates.

EG,
```
(Homed and at 0)
MDI:
G0 X10Y10
G54
G10 L20 P0 X0

(Run Program, Say 10x10 Square. Its not unique to any code, End at X10Y0)

G55 (or G56 etc.)
G10 L20 P0 X0
(Run Program, Say 10x10 Square. Its not unique to any code, End at X10Y0)

G54
```

G54 in the var file is sometimes now overwritten by either the difference between the two systems, or the second coordinate system.

Currently running lcnc 2.8 with custom interface.

as a test, try setting the P value in the G10 line to the actual user system number.
eg p1=g54 etc.

Chris

So interesting, its seems using the axis P1-9 instead of 9 doesn't recreate the issue, can let the machinists work while I diagnose now

However on P0-9 it doesn't seem to update the var file until after start is pressed. Might need to dive into this a little more now. Do you know what function or file actually updates the var file?