My advice is not to use Holocron Toolset, it is still essentially in beta and it's changes to a module cannot be trusted for the final product.
Whenever I use it, I use all of the individual tools for filetypes to extract the relevant information I am applying to it, which is only ever co-ordinates as it's 3D viewer is helpful.
But for releasing or even making a mod, it makes too many changes to fields that it doesn't need to for me to fully trust it.
To determine which level it transitions to, you will either need to look at the string parameter field in the dialog line or you might need to decompile the script, it is worth noting however not all scripts can be decompiled, but most can.
If I were looking to do this, what I would do, is extract TSLRCM's module to a folder, then extract the other mods module to a folder, from there I would write a batch script to diff all of the files in both folders to determine exactly which files are different between each mod, then I would examine them more closely and figure out what changes need to be merged, kept or abandoned.