in order to stitch several single frames, I loaded them from single files (TIF) checking the option "Open as sequence".
Sequence is correctly built but for each image added from file a new calibration is also added to the list.
Of course all the used images have the same resolution and calibration.
In my case the sequence is made by 441 frames and, after loading all the images, I found 441 new identical calibration in the list.
The calibration remains in the list even after the Sequence is closed (deleted from Premeir).
Is there any way to avoid this problem?