How to import dKart fishing pro user created data into Open CPN program

[Mottetu]

Hi to everyone!

I`am new in this forum and need for some help about Open CPN program.
I`have installed Open CPN and liked it very much, but I`am used previously dKart Fishing pro about ten or more years and record a lot of user data in this program, and today I`am need some help, how to import or convert this data into Open CPN program. dKart Fishing pro records data in formats:

lines areas ... .lad
markers ... .mrd
tracs ... .trd

All the best wishes
mottetu