As of Badlion Client 2.11.0 Mod profiles are now shared across all of its supported versions.

If your profile is downloaded from the internet and doesn't work, here is a quick fix.

Visual Guide

First of all, make sure the profile is one of the following files:

https://cdn.discordapp.com/attachments/192425556338278400/658989118444797953/Screenshot_7.png

Then launch the client and on the home screen click on "Mod Profiles"

https://cdn.discordapp.com/attachments/550301400744329217/658987004805251092/Reconvert.JPG

Click the "i" icon

https://cdn.discordapp.com/attachments/550301400744329217/658987026439340072/Reconvert2.JPG

Click the icon with a picture of a folder

https://cdn.discordapp.com/attachments/550301400744329217/658987042604056595/Reconvert3.JPG

Restart MC

And Voila! Your profiles will now be reconverted and you can play with them!