Playlist Manager v6.1 changes relative paths to absolute

I've just started using Playlist Manager V6.1 (on a LMS v8 system) to manage local playlists.

I noticed that if I have a hand-crafted, basic playlist with relative paths, whenever I add a track to the playlist the relative paths are converted to absolute paths.

As an example, an initial playlist:
Gets converted to the following if I add a track:
Is there anyway to maintain relative paths? (I'm trying to reuse the m3u playlist files on other systems that work with the relative paths)

Thanks.