Programs enabling conversion of the file:
If your objective is to convert the file from OV2 to the file ITN, you can use any of the applications listed. OV2 to ITN conversion process in every program intended for this purpose (so-called converters) is very intuitive and everyone is able to manage converting a file.
However, bear in mind that the list may also include programs to support and work with the indicated extensions OV2 and ITN - and not only converters. In such a case, you need to open the source file OV2 and from the options available in the program, choose ”Save as... ITN" or "Export to ITN".