Just as you need the program and license of each tool when opening a file in interCAD Editor, you also need the program and license of the tool when converting.
For example, to convert from Allegro to Zuken, you need the program and license of both Allegro and Zuken.
As an exception, if the file you want to convert is in ASCII format (e.g. .asc file of PADS), you can convert it without a separate program.
Therefore, if you convert from Allegro to PADS and convert it to an .asc file, you can convert it without the PADS program or license.