Deleted Reference Count: Deleted references are a significant cause of crashes and game bugs.

The ITM count is the number of ITM records found and corrected in the mod plugin. If another mod higher up in the load order makes an intentional change to that thing, it will have its effect cancelled out by the ITM record, which can cause problems.

ITM Count: ITM records are a type of dirty edit where a mod has overwritten something in the game without actually changing anything.

it may report false positives for ITM records when a plugin is used with different versions (most commonly different localisations) of its dependencies than those it was created with.

it can't detect plugins that have been edited but not cleaned,.

it can't detect unknown unclean plugins,.

Although it's a lot faster than actually checking for dirty edits in the plugin, this identification method has a few limitations: LOOT identifies an unclean plugin by comparing the installed plugin's CRC value against the CRC values for known unclean versions of that plugin.

CRC value: CRC values are a highly accurate way of identifying files based on their contents, as if the contents change, so does the CRC value.

LOOT identifies and describes unclean plugins using four key pieces of information. LOOT plays a key role in these efforts, as it holds the complete list of all known dirty mods (as does BOSS), and it uses this information to provide notification messages to users for any dirty mods they have installed. As such, there are community efforts to raise awareness of dirty edits and cleaning. The problem of dirty edits is largely a problem of ignorance on the part of mod authors and users alike of the problems dirty mods can cause. Detailed instructions and information on mod cleaning are available at 圎dit's cleaning guide. Thankfully there is a way to remove dirty edits from mods relatively easily, a process known as mod cleaning, using TES4Edit, FO3Edit, FNVEdit, TES5Edit, FO4Edit or SSEEdit (for Oblivion, Fallout 3, Fallout: New Vegas, Skyrim, Fallout 4 and Skyrim: Special Edition respectively). The more dirty edits there are in a mod, and the more mods with dirty edits you use, the more likely you are to experience issues. Dirty edits can cause a wide range of issues, including incorrect game settings, missing content, broken quests and crashing to desktop. Dirty edits are often a side-effect of mod creation, and are often due to bugs in the utilities Bethesda has provided to create mods, rather than bad practice by mod authors.

How to clean mods fallout 4