If they are important should not your character (ie you) be takinig manual actions to preserve them. Otherwise it is just like RL, if you don't file away important stuff you lose it.
The ability to manually archive reports is something I can support, much better then having a folder of copy/pasted notes and reports.
Sure, but people usually archive stuff in their downtime. Emails, reports, receipts, whatever, nothing IRL really lasts as little time as BM scout reports do. As it is, one can't even wait to do it on weekends, most reports will be deleted already by then.