Hi Brian,
I discovered something else regarding this problem that may help you to fix it.
If I set tool 1 (for instance) for both layers (inside and outside) in the layer control, a G42 is generated for the outside chain (as explained previously), but if I set tool 1 for inside layer and tool 2 for outside layer, then the code is properly generated, with G41 for both inside and outside chains.
Hope it helps.
Jean-Louis