New data retention policy and Opportunity Influence Analyzer

Hi,

I've been reading through the articles about the new activities retention policy, and I'm a bit confused by this article Marketo Activities Data Retention Policy – Impact on Reporting

With my understanding, Interesting Moment activities will be deleted after 25 months of the activities. I believe this would impact Opportunity Influence Analyzer too, as our lead and sales cycle is quite long.

After Aug 15, will we lose part of the OIA analysis too, or will it be maintained? If we'll lose it, then what's the option for us, other than using bulk extract?