It is an older home but had been used as a duplex for a number of years and was very easy to show that it had.

My Banker has advised me that older accounts/loans will be canceled at time of renewal.

A larger consideration for me when mortgages are required for the end-buyer is the general requirement for at least 90 days of title seasoning. 

(most DSCR lenders only require 3 months of seasoning to refi out of a bridge loan)This is a lot easier to do with rehab projects but can be done without if you can find the right deals. 

Lenders often require a home to be in good condition, and an older or partially replaced roof might not pass inspection.

Huge opportunity to add value by making improvements to an older office building.

seasoning for value?

BiggerPockets is full of resources designed to help you along your journey, whether you are just getting started or a seasoned investor.

Then they suddenly told me my taxable brokerage account doesn't count as reserves but they won't let me sell and move assets to a checking account because they won't be seasoned for 60 days.  

I use RentSpree and always ask for the $49 version from each tenant older than 18.