Can’t unlock Walls in ArchiCAD even if connection is broken (weird), a change in the Reference Line options can’t be done. Neither can be modified nor be deleted.
Issue persists with Beta Version. Walls generated by Grasshopper/EH code are locked even if the layer status is Unlocked in ArchiCAD’s Layer Settings.
This looks like another good candidate to report in the Grasshopper-ArchiCAD Live Connection beta forum. If it turns out this is something that needs to be fixed in Grasshopper, we trust Graphisoft will let us know!
Thank you for your consideration.