How do I reset to original time stamp?

[one54]

I accidentally removed three vocal tracks from a session: one close mic, and a pair of stereo room mics. I've imported them back into the session, but now I'd like to know if there is a way to return them to their original time stamp so that they'll remain in phase; I don't want to aproximate by trying to line up the tracks!

Does anyone know how to do this?

Thanks in advance

[uno1234]

use spot mode. double click the region, click on the triangle next to "original time stamp" at the bottom of the dialog box. hit okay, and presto...