Open the OMF in Nuendo.
Export it to OpenTL
download EDL Translate v4.17
ap-sound.de » downloads
go to Load from -> Open TL EDL
then set framerate and samplerate
then Save to -> Samplitude EDL
I used it to conver a vegas project to nuendo.
For some reason nuendo opened the Open TL EDL it created but not the AES31 EDL so that´s why I suggest you export in that format doing it the inverse way.
Hope this helps!
ps: i´m looking for edl convert demo. if you have it i would be glad if you could share it with me (cui bono site is off line for some years now)