Thanks for raising this 
Can you clarify if everything on your device is working when flashed with the other device’s image? All features , no negatives (no weird performance issues)
To aid the discussion , can you provide links to
- the vendor’s oem device page
- Hardware info or wikidevi page for your device if one exists
- The openwrt wiki page(s) of the image you used
@tmomas or one of the other wiki admins will be able to suggest the place for the updates to go into