not for a day or 2.
i know this one clown left his R6 strapped down ini his truck for one week.
not the smartest move in my book.

what i did when i was making a trip to NY via DC i losened up the straps over night and unloaded the forks, then tightened them back down the next morning before i took off.

As long as you dont keep them compressed forever you'll be fine. a day or so wont hurt it.