My club has a C42B that is used both as a trainer and a recreational aircraft, so I stopped by and looked in the Pilot's Operating Handbook for that one.
Now, before I say anything else: obviously, if the exact values matter, then always consult the POH for the specific airframe in question!
With the above preliminaries thus out of the way:
- The structural limits are stated as maximum positive wing loading +4 G, and maximum negative wing loading -2 G.
- The wings can be removed, and the POH lays out the procedure for this (as well as, obviously, that for reattaching them).
At least while quickly glancing through the text, I didn't spot anything obvious which would indicate that this differs between variants in the C42 series.