If you are flashed from k550 to W610, then you need the W610 original menu.ml and icons, not the K550 files. Essentially your phone is W610 now, if I understood you correctly.

If you can't find the files you need, you can extra the firmware using main2raw and SEFStool4 raw, which basically takes your FS.FBN File and extracts it to a regular windows directory file structure. You can then navigate it to find the original menu file and use XS++ FSX to upload the file and icons.

Good luck!