Perfcutcontour

I am creating  non adhesive vinyl inserts for a box top and want to cut all bar 1mm gaps in each rounded corner of a rectangle, but I cant find any way to make gaps in a perfcutcontour outline.

I am printing and cutting on a Roland machine with roll vinyl probably getting 6 inserts from the width and don't want them all falling off, but simply detatchable after the job is complete - anyone have any clues?

Best regards

Philip