The Locker of Lupine Linking is lost in the combine, but you can acquire another by simply talking to Worg Master Krellog.
The following mounts can be combined with a MOTTLED WORG BRIDLE inside the LOCKER OF LUPINE LINKING.
I was able to combine mounts as noted below:
Black Chain Bridle = Black Chain Worg Bridle
Black Leather Bridle = Black Leather Worg Bridle
Black Ornate Chain Bridle = Black Ornate Chain Worg Bridle
Black Silken Bridle = Black Silken Worg Bridle
Brown Chain Bridle = Brown Chain Worg Bridle
Brown Leather Bridle = Brown Leather Worg Bridle
Brown Silken Bridle = Brown Silken Worg Bridle
Ghostrider's Bridle = Ghostrider's Worg Bridle
Tan Chain Bridle = Tan Chain Worg Bridle
Tan Leather Bridle = Tan Leather Worg Bridle
Tan Silken Bridle = Tan Silken Worg Bridle
White Chain Bridle = White Chain Worg Bridle
White Leather Bridle = White Leather Worg Bridle
White Silken Bridle = White Silken Worg Bridle
All of the Mounts look like a Worg.
If you change your mind, you can combine the new mount, by itself, inside a Locker of Lupine Linking to get the original two mounts back.
NOTE: This does NOT seem to work with ROPE bridles (they would not combine for me).
Edited, Jul 20th 2020 11:23pm by GOMN