Delete Missing Assets

Hello, all.

Well, nothing seems to be going right for me lately. I deleted a spline from a route and i couldn't find it, so i deleted it from said route using the Delete Missing Assets function in TS12. Well, the spline is still there, albeit being two dashed lines now, but still, what went wrong? And no, i can't delete it manually?

How the heck do i get rid of it?

Try to delete it as a track in surveyor mode, That worked for me in 2012 and TANE . I have run into this many times with both.