load usc config file does not work

Hi,

You try to do something that is not supported. Your best chance is to generate an SCF file :

https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/tmos-concepts-11-3-0/tmos_single_config_file.html?sr=54730891

You then need to modify the content according to the new appliance and finally import the SCF file to your new system. It's easy when you are using only LTM, but can be very hard to do when you are using several other modules.