"Jose" wrote in message
.. .

Interesting. Suppose I wanted to do multple approaches at ABC including
touch and goes. If I filed DXR ABC XYZ, could my IFR flight plan be
cancelled upon touching for the first time at ABC?


No.



(I presume it could if
I filed DXR ABC with multple approaches and T&Gs at ABC)


If ABC has an operating control tower, yes. Nothing is actually done to
cancel it, it's "cancelled" because you've safely reached your clearance
limit.



Then, back in the air after doing my T&Gs at ABC, I ask for a clearance
back to DXR, changing my destination from XYZ to DXR. Would this work?


Yes, but why not file DXR..ABC..DXR if that's what you want?