what settings modifications do cause a full rescan?

[aliasname]

just managed to let minim scan my library .. next to 1h until finished.
I then modified the tagValue parameter slightly.
Result is a complete rescan from scratch.
Means .. no files were modified, nor their locations.
Isn't there a way to let minim prevent from rescanning all the files but use some sort of dumpfile where it stores all file/tag readning so that modifying the setting won't ask for a complete rescan?