Transfer Custom Content to iPad

[3l3phant]

I've created a custom ability for a character which includes a Tracker and Adjustment. Do I need to export the ability and the portfolio as an .hl and use the method to transfer the entire .hl or can I just transfer the .user file? I've to say, it's not the most user-friendly method of transferring items. I don't suppose there's a way to use the Dropbox method of transfer?

EDIT: Going through the export process and then transferring the .hl file to the iPad and trying to import it gives me an error that the file could not be imported because import files without a third-party id may not be used. Looking in HLExport it clearly shows there's a Third-Party ID and a Name, neither of which are editable.