Aye it seems like most of the magic happens in the md5translate.trs file.
My guess was that in the file would be a reference to the minimap but it seems to be just the same as with the adt files, everything is given in the md5translate.trs
I took a look at one single group wmo,and you'll have to try something out.
[spoiler:xfx1toxf]WMODungeonKL_DireMaulKL_Diremaul_Instance_097_00_00.blp 1cdfb42b02831bb5be9c5933bec6f609.blp
WMODungeonKL_DireMaulKL_Diremaul_Instance_097_00_01.blp 00444a6ce83f93e60e33b0e7a3888df0.blp
WMODungeonKL_DireMaulKL_Diremaul_Instance_097_00_02.blp 9bce2bacb28d94f9cdf2e9048cd330de.blp
WMODungeonKL_DireMaulKL_Diremaul_Instance_097_01_00.blp 650ddf7c6b3de3b5271c505f7e45e54e.blp
WMODungeonKL_DireMaulKL_Diremaul_Instance_097_01_01.blp 08dbd285d3e0b139f9e8d06ce6762f12.blp
WMODungeonKL_DireMaulKL_Diremaul_Instance_097_01_02.blp f2e1995b91a59edde6a309b299cca1ee.blp[/spoiler:xfx1toxf]
the first block
WMODungeonKL_DireMaulKL_Diremaul_Instance_097_01_02.blp
is a reference to the wmo file.
_097_ is the group file that i chose.
_01_ is the x position of the blp file in the minimap
_02 is the y position of the blp in the minimap.
This picture explains it way better than i could do it with words:
and on the right side of each entry is the translated file
(e.g. f2e1995b91a59edde6a309b299cca1ee.blp), wich leads to the actual file in the textures/minimaps/ folder.
What you have to do to find out if this is right:
You could now try to add 3 more entrys in the md5translate.trs
WMODungeonKL_DireMaulKL_Diremaul_Instance_097_02_00.blp testingminimaps1.blp
WMODungeonKL_DireMaulKL_Diremaul_Instance_097_02_01.blp testingminimaps2.blp
WMODungeonKL_DireMaulKL_Diremaul_Instance_097_02_02.blp testingminimaps3.blp
, make the three blps testingminimaps1.blp wich each have a size of 256x256 pixels and place them into the minimaps folder. (I would be better if you can clearly see them, by using a distinct colour) and see if theay actually appear ingame. You can of course use any other wmo if you like so.
greetings