Not aware of that function,but if you place a layout in server's layout folder,it will be always loaded together with track the layout is for. Not sure how server handles if there are 2 layouts for same configuration,that's why I always make sure to delete the unneeded one.
If it was decided that LFS should load the last accessed layout rather than last modified, the windows file system does store that too. It's not shown by default in file explorer, but it's there. No program should be diddling the modified date if the file is not modified.
It actually resaves the file when loaded to make it the most recently modified file. I suppose ideally LFS would store in some other file a list of the last loaded layout for every config. But this simple solution has always worked OK.