Issue when importing CDG from HD

[songpony]

I'm currently using the "Import from Hard Drive" functionality when I only need a few songs off a CD (in order to save on Book IDs). However, if I already have a couple of songs loaded that use this Book ID, I can't load any additional ones unless I delete everything with that ID and then load all of them again. For example, I have 69901, 69902 and 69903 already imported from hard drive. I now want to import new .cdg files as 69904 and 69905, but I get an error message saying that Book ID (699) is already in use. In order to get it to work, I have to delete 69901 - 69903 within Hoster, then import 69901 - 69905 in order to get the two new ones. According to the Hoster documentation, you can import up to 99 .cdg files to a single Book ID, but if you have to do them all at the same time, it's more than a bit of a pain (not to mention the amount of disk space it would require to house the 99 .cdg files before they're converted to .kma's). Is this really how it's meant to work? Shouldn't you be able to just import a new file so long as the song # isn't already in use for that Book ID?