Migrating Config from TMOS 10.2.4 to 11.4, using SCF migration

if I recall I deleted the interfaces...

from memory my basic process was as below, this may not work for all situations and if you are not comfortable at the cli I would seek F5 assistance;

1. build 11.x VE
2. take 10.2 UCS
3. load 10.2 UCS into VE (this will fail)
4. extracted files are now in /config/bigpipe
5. edit /config/bigpipe/bigip_base, remove interfaces, STP block, replace all int references with 1.1
6. run the following cmd

   /usr/libexec/bigpipe daol

7. fixup config errors and rerun
8. Assuming you have named the VLANs the same you can now import certs/keys and copy out ltm config stanzas that you need and import to your new box with

   load sys config from-terminal merge

The are some other bits you may also need to think about, e.g. license and master keys. It's not the most straightforward upgrade I've done but I haven't found an easy way to get it done with a scf or ucs when jumping from different platforms and major s/w revisions.

cheers