rear diagonal brace removal question

[mountainman]

I am about to change the tiptronic fluid in the 04 boxster S and all the manuals and write-ups talk about supporting the car on jackstands and then removing the diagonal supports for access to the transmission pan. I have a drive on lift which gives me good access underneath and do not need to put it on jackstands. My question is whether there will be any difference if it is supported from the jack points as on stands or sitting normally on the wheels when I remove and replace the diagonal braces? I want to be sure nothing gets out of alignment during the process. I have a jack system on the lift that will lift one end of the car, but if I support the rear end with that then it will not be level for the refill and check process. I am hoping that nothing should move when I remove the bracing with it sitting on all 4 wheels. Any insight would be appreciatd.