you cannot undo changes to the sends.... if that is the way you work...

all edits can be undone up to 32(set i prefs) levels back... cmd+z on mac ctrl+z on windoze....

you will learn alot if you read the basic editing chapter in the manual.... wich resides in pdf format on your hd...

im talking about after i have closed pro tools adn go back into it...im in non destructive mode

then turn the down the send to the reverb

im not using the send...i did it using audio suite effects...it dont matter now i got it all worked out...thanks anywyas

All the audio tracks are in the bin on the right, every time you change a file in non-destro mode it'll make a new one, so figure out which audio file you need and just drag it over.