It just deletes or skips the points between your current position and the direct point. The points of the procedure that follow the direct point will be untouched. So I'm not sure what the problem is. Seems like needless effort to remove all those remaining SID/STAR points, and, frankly, a stupid one, since you can't anticipate if you'll stay on the procedure after reaching the direct, or not. Poor practice.
Also, you can't keep the points you've already passed within the active route, as they're automatically deleted, too (except the most recent one or two). So, e.g., if you fly A->B->C, once you're at C, you can't input a direct to A or B any more. Where I'm from, ATC shouldn't give directs to past points, as it'd be a bit of a hassle to input them manually into the active route again.
Last edited by LFVA; 5th May 2017 at 16:30.