ILR how far back?

Hi, Wife will be applying for ILR in July, FLR(m) was Dec 2019, BRP good until Aug 2022, her 5 years was up in April. My question is how far  do we go back with all the stuff (docs with our addresses etc)  2.5 years from when we apply or all the way back to Dec 2019?

They say you should provide mail going back to the date your most recent BRP card was issued, though I believe the application document list may actually ask for a full 2.5 years, so we recommend sending 2.5 years’ worth.

So, if you are applying this month, June 2022, would go back to December 2019… so you will want mail from each of the following months:

December 2019
May 2020
October 2020
March 2021
August 2021
January 2022
June 2022


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Thanks, we'll be applying July, her BRP was issued  28 Jan 2020 so I'll go back to there. We've got tons of the stuff so no problem.