That sounds like how my rehab was treated, but mine still listed out the original loans.
Is the start date for the new loan correct? If it's a consolidated loan, it would have a recent opened date; rehabbed loans will have the original date (which makes me wonder how they're reporting the opened date since it was 5 lines, presumably from different semesters/terms).
I suppose the good news (at least) is that the opening date is the "best" one you could have hoped for.
Good luck with whatever avenue you pursue!