Thanks for this update.
There's still something I don't understand: using the 1st demo of Sweet Home 3D, I tried to generate dimensions with the default option "For all walls at current level", but just got an empty level. Wondering if you took into account the existing dimension lines, I deleted the existing ones in the demo, but didn't get a better result.
Do I miss something? It would be nice if the default option would generate something, wouldn't it?