See attached screenshot.
Step 1: when fragmenting the macrocycle, it loses its light gray fill color, which is expected behavior because it is no longer a ring.
Step 2: however in step 2, the to five-membered rings should not lose their fill color.
I actually had the same behavior using the Eraser tool to delete a bond between 2 rings. See attached picture.
I actually had the same behavior using the Eraser tool to delete a bond between 2 rings. See attached picture.