Problem with sync from Sound Devices MixPre 10ii and Tentacles

Hi,
I did two shoots last weekend using three tentacles that were jam-synced to my MixPre 10ii.  I got time code via the MixPre’s BNC connector and synced the Tentacles that way.  All good.  The problem comes when I go in to Tentacle Studio…. It does not recognize my audio tracks as having any TC… Any ideas what I did wrong?
Thank you!  Chris C.