I cook my enchiladas in the sauce not seperatly. If anything they are over saturated the flour ones end up swelling up and soggy the corn ones are very soft but not soaked up like the others (we like both flour and corn). We like ours saucy though so I often bring the sauce up to over halfway, and somtimes almost all the way.
So cook in sauce, just not as much as me maybe.
ETA: I don't dip in oil at all. I do put some sauce in the enchilada with the meat and cheese but I just soften mine up in the microwave with a wet paper towel on them then roll put in the pan and pour the sauce over them, cook covered till bubbly then take out pour on cheese and put back in the oven until it melts, gets bubbly and light brown.