This tutorial shows how to merge .SC2MOD-files by using "SC2-Components" and copy-pasting XML data-lines. Feel free to ask me any questions in a P.M if you wonder anything!
I forgot to mention, this method can also be applied to .SC2-Map-files.
Super helpful thank you.
<Click Here> To See My Epic Single Player Campaign (LifeForceCampaign.com)
Glad I could help! :D
Just wanted to add that editor has raw XML editor so notepad isn't needed everytime but when copy pasting many lines it can be faster with notepad or similiar program.
Custom Campaign Initiative is project that gathers best single player campaigns and their makers together.