Tenant is busy moving and doesn't have time to chat, changed numbers, or some other innocent reason.My initial suspicion is they're hiding something.

If the tenant waits until the sheriff shows up, that's the worse.We accept tenants with a blemish on their past rental history if they've made amends and changed their ways.

Personally I would not change anything and generally stay away from paint on wood so as not to have to continually do repainting.

What is the likelihood that the PM Company will make changes to their own management agreement to gain a client with one investment property?

Not sure what I can do but seems I need some way to block the water from their roof or change my vinyl siding to something else.

Should a lease amendment/addendum be written to say that building ownership has changed and future rent payments can be submitted via XYZ?

Both buyers have their pros and cons but weigh out the written offers and see where it leads The pro of selling to an investor is that the sale will probably be pretty fast and you may not need to do anything to the property by way of repairs, the con is that an investor is probably going to offer you a lower price.

Fannie Mae just changed their rules a year ago that allows you to transfer the loan from your personal name to an LLC that you are the majority member of, without it causing the due on sale clause to kick in. 

We set a closing date for October 22nd so it's fast approaching.  

These guidelines help to create a system - but guidelines are not hard and fast rules.