There was a writeup i read somewhere:samola10 said:@ xtreme,
they separated 1998 but the relationship is back and fort since 1995 till 1998 then she decided it ll not happen again nd finally divorced 2010 nd i did mine 2012, thats all
If you are a spouse, common law or conjugal partner:
Your sponsor needs to provide for basic needs for 3 years starting from the day you become a permanent resident.
If the sponsorship agreement was signed before June 28, 2002, your sponsor needs to provide for basic needs for 10 years starting from the day you become a permanent resident.
Since your sponsor's earlier marriage was before 2002, it means she needed to provide basic needs for 10years, also like i said make sure you verify this info and find out if the sponsored person ever collected welfare. CIC verifies that the sponsor is not owing the Govt
This pdf also talks about it : http://www.cic.gc.ca/english/resources/manuals/ip/ip02-eng.pdf
page 14 : R117(9)(b),R125(1) (b)R132(1)