: The problem I'm seeing is after one of the recent updates to MCC, there was a
: folder change on my hard drive to where MCC was originally installed.
: There was no prompt to inform the owner, after the update of the game,
: that the folders and file locations were changed.

: Before the change, the Master Chief collection (the section of the game that
: could be modified) was originally contained in a folder called
: "ModifiableWindowsApps". There is a feature in The Master Chief
: Collection called "anti cheat disabled(mods and limited services) and
: that is where the modifiable files for the games are contained. These are
: the files that anyone could apply mods to without messing up the rest of
: the games contained in the MCC.

: Since MCC updated, the folder location that contains The Master Chief
: Collection got moved to a folder called "X Box Games. I've rarely had
: trouble in the past getting mods to run, but this mod has me confused. I'm
: sure there is a simply fix for this that I must not be seeing? I'll keep
: trying!

After looking at the Nexus Mod web site and the forum posting about this mod, I found some helpful info about which single player maps are replaced with the modded maps.

Halo - Rockslide
Truth and Reconciliation - Hangar
The Silent Cartographer - Island
Assault on the Control Room - Snowfield
343 Guilty Spark - Swamp
Two Betrayals - Snowfield (Night)

I was a little confused as to which single player maps were modified, so the info above should make it easy to understand.

It's easy to make a copy of the original single player maps that get replaced with the modded single player maps. Just create a new folder, and put it somewhere safe, and call it something like "Original Halo CE maps" and just copy and paste the original maps into the folder you created. To restore the original maps just delete the modded maps in the Halo1 maps folder and paste the original maps back in the Halo1 maps folder.