LR3 to LR6 preset conversion?

  So I started out with LR3 and got some very nice Timelapse presets for it. I just upgraded to LR6 and those really nice Timelapse presets will not import or install in LR6.

How can I edit them in order to import them into LR6. I've tried all the import options I can find but when I look in the Develop/presets list they don't appear. When I've done the right-click Import option LR6 say they are not a compatible preset and denies the import.

What can I do to edit them to get them to work in LR3? I don't want to have to go an buy another $100 worth of presets to get the 2 or 3 I need for the Timelapse work I want to do.

Here's the screenshot of the error message.