ML Raidtacker will save this data in your Account Savedvariables directory:
<WoWDir>\WTF\Account\<LoginName>\SavedVariables\CT_RaidTracker.lua

This image is an example of my World of Warcraft Installation.

All other files are stored in:
<WoWDir>\interface\Addons\CT_RaidTracker

Here you can see all ML Raidtracker files. Your installation should look simular.