Can a plaintiff who signed an agreement in December 2006 to "renounce any further claim" for spousal support after December 31, 2008 make a new claim for support?

British Columbia, Canada

The following excerpt is from J.L.T. v. J.D.N.T., 2009 BCSC 780 (CanLII):

The fact that the plaintiff agreed in December 2006 to “renounce” any further claim she may have to spousal support after December 31, 2008, does not constitute an absolute bar against her now making a claim for further support: Bowes v. Bowes, 2005 BCSC 593, 15 R.F.L. (6th) 247.

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