Migrating to new LB pair

Hey. I just want to say thank you for taking the time to come back on here and let us all know what you did to be successful with this migration. We have been struggling for weeks as we are also trying to get from 10.2.0 build 1707 to the latest version going from a pair of 1500's (I know right?) to a pair of 4000s' and have found out the huge differences in these versions after the very first function called "provision" in the old scf file is no longer called "provision." You were the first one I found that has shared their experience in this regard. I have found that F5 has not put any effort in "migration paths/steps" that are officially supported, I think in part by just how easy it was for you to go from 9.x to 10.x with an SCF file and minor by-hand changes. However, the jump from 10.x to 11.x is entirely different and I have been told by support that they are writing an approved hardware/software upgrade path with which we can follow on their support site but that they do not support a migration at all, at this time. He kept referring me to my local SE to take care of this. So now I just had my local F5 SE bring me a 3600 from his basement since this is one of the line of boxes that we totally skipped over that will allow both my current version and my new version of software on the device so I can then perform the upgrade on it to later move to the 4000s pair. Painful! That seemed to be the safest route given that I use both the 1.x and 2.x interfaces. I may still have to tweak those small differences though. If you have any more tips on tweaking for minor hardware differences within the conf files and/or the scf/ucs files that would be great. Thanks again.