hey there bob
ja, im not sure of all the rules and reasons, but it seems that if you have two clips with a transition in between like this:
_______x_________
and if you then mark an i and o before and after the transition like this
____i___x___o______
then you can overwrite the transition.
if you are parked on the outgoing clip and press X to select the clip, it selects the whole clip and the whole transition and will replace to the end of the transition, BUT if you mark the in or out point at the midpoint of a transition, it isnt smart enough to know you want to keep the transition.
but hey, it is nice to know that you can add transitions to multiple edit points, (erm, like discreet edit could do over 10 years ago!)
later gater
mark