Missing switchoffset data in g-code

Got a strange one here, it started recently. When generating the g-code, everything seems fine except the value for the switchoffset is not included in the 28.1 routine. The line move command G00 is present, but no value for the Z move. :question:
The post processor (THC300) seems fine, I have edited it for the switchoffset.

Tried installing SC 4.0.16 …Same thing. Then I re-installed SC 4.0.14 and problem goes away.

Here you go Les, something to play with. :laughing: By the way, SC 4.0.21 has the same problem.