The Select cannot as yet connect to a PC, so you either mean they were running OK on the Select previously outwith RM or they are running OK now in RM using either an Elite or eLInk.
Regardless of that, which locos are we talking about by R-number as not in the database.
If they are TTS locos then as you type in the search box all likely R-numbers come up to pick from but notice that TTS locos only have T after the R-number not TTS as you would expect. You can also search for the Class of loco e.g Hall or A4 or FS, etc and pick a similar one. If the loco chosen is the wrong colour then look for the correct colour in the lost or in the RM Locos folder.
Make sure you are using the very latest copy of RM downloadable from the link at top of page as often HRMS will slip in new locos without using a formal revision update.