It works is After Effects but is not working in Premiere. I am on the latest version of Premiere on Windows. When using s_lensflare for example, I “edit mocha”, track the points, save and quit, make sure the “use mocha” buttons are selected. The points move to what seems to be the beginning position of where I had the hotspot in Mocha but the track data isn’t applied. Works fine however in AE.
Please contact BorisFX support regarding this issue. They should be able to help sort through your issue with Premiere.
We were able to test out Sapphire 2020 in Premiere and it was able to track fine and the hotspot/pivot was able to follow the tracked hotspot/pivot.