Hi Terry

I test what you proposed:
I created a new location into the inventory call WIP (Work in progress.
I assigned all the item to the new location
I changed the location in Job Tracker for WIP
I created a test job, then I checked into the inventory and the item was put at the WIP location in S/O
I opened the job into the Counter Sales and then I checked back the inventory and the item was no longer in the WIP location (S/O at zero), the job was marked but imported and the item too.

Till now everything OK

I posted the invoice into Counter Sales: Transaction History OK,
Sales History OK, etc.

The only problem that I was able to find is in the location WIP.

The quantity in the WIP location became in minus.

So the utility that we would need to create would move or change the WIP location when we are opening or posting a job into Counter Sales for example. Or keeping it into WIP location till the invoice is not posted. These are only suggestion.

Monique