"Restart the same OpMode again" is exactly describing what it does. If one opmode is commanded but from external interference the actual mode is different the retrigger is used to just tell the MotionInterface to switch to the still/currently commanded opmode again.
If many online changes are made, especially when new variables/pointers are created a "clean all" and complete download is sometimes needed to recreate storage stack and reinitialize pointers.
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