Assigning Instruments

A playback template I exported has two instruments assigned in a VST Endpoint Setup, and I can hear both.
Port 1, Channel 1, Bari (assigned instrument), Default Expression map.
Port 1, Channel 2, Guitar (assigned instrument), Default Expression map
When I imported the template into another project that has the same instruments, only one of the instruments, the Bari (for Baritone ukulele) was in the Endpoint Setup dialog. How do I add the Guitar to the Endpoint Setup and hear it?