ID:22677 The argument (<constraint argument>) matches net '<constraint target>' which will be lost during flattening. In this release, this constraint target is ignored.

CAUSE: The constraint targets a net that is not preserved after flattening because it's connected to a bidirectional port. In this release, the constraint target is ignored.

ACTION: Specify constraints on nets that are not connected to bidirectional ports, or move them to uni-directional ports.