Maybe Caliber netlisting is not set up with the right switch /
stop views? Or, maybe it's the scheme of assigning connectivity
which I am seeing sometimes is the old property-on-polygon,
and other times a label on layer (for example) m1port/dwg. A
layout entity created under one verification suite may be
constructed differently in the details, than one meant to be
verified (and reused, and reverified) under another tool-set.
Is your Caliber deck coming from TSMC themselves? Or a
third party stab at an Assura-equivalent checking? You
are almost always best off at the source, if they'll talk
to you (and a help ticket will tell you that, for nothing).