Upgrade BIG-IP Software From 11 to 13

I realize that this is an older post, but I've made two attempts myself to go from 11.6.x HF1 to 13.x HF2 and have had issues during both attempts.

It would appear that the primary issue is with a contention issue between APM and ASM. In my specific case, I have some virtual servers that are internet facing and have APM policies in place for user authentication and also ASM policies in place. Also, during the last attempt, I found out the hard way that an ASM policy in Transparent mode isn't really that transparent and still can impact traffic. So, I'm now in the midst of surgically disabling ASM from the virtual servers that also have APM policies and getting ready to try this upgrade again at some point in the near future.

Now, as for the actual configuration copy and rebooting into 13.x, that part actually went well, although I've had to go into the system shell and run cpcfg to copy the configurations as I'm on a viprion chassis and when selecting the boot partition the option to copy the configuration is grayed out. Also, using the cpcfg allows me to ensure that the most current configuration is copied over to the 13.x boot partition so it doesn't spin up without a config.