There is no complete thread that I can find to help people achieve this, but I am close. So when I get the last pieces of info I need I'll put it in here under one post so other people can easily find it.
There are multiple on the internet to convert the .ov2 file to some "Digger readible" file.
There are also articles describing how to create .mca files. I posted two links myself and a document of my own. I will do a quick search, but have to go in 5 minutes