I'm pretty sure the cause of this is that on this remote there are 45 keys and in most remote.conf configs i found in here there are less, so they simply don't get remapped anyway.
Hello,
I had a similar problem, as I wanted to change some of the keys on my remote. I followed this HOWTO: Ir remote control - WeTek Community Forum
(please note: the link to the Linux header file is wrong, you find the required key codes in linux/input-event-codes.h at master · torvalds/linux · GitHub).