If it is more than one investor and pooling funds and deals then that is a completely different animal where you would file for a SEC exemption through a form D then ahve to file with each state the investors are in and have a subscription agreement and other docs drafted. 

Throw in the fact that properties over the next few years most likely will have very low to zero appreciation and they probably do not get you a net of $6k a month even if you considered the principal payments you are paying down and lending right now is a far better situation to be in than owning property - just as the opposite was several years ago during very low rates and high home appreciation. 

I've included an example below to help illustrate this.So different lenders have different rates (which do vary even for DSCR loans) but these are factors they all consider.See example below:DSCR < 1Principal + Interest = $1,700Taxes = $350, Insurance = $100, Association Dues = $50Total PITIA = $2200Rent = $2000DSCR = Rent/PITIA = 2000/2200 = 0.91Since the DSCR is 0.91, we know the expenses are greater than the income of the property.DSCR >1Principal + Interest = $1,500Taxes = $250, Insurance = $100, Association Dues = $25Total PITIA = $1875 Rent = $2300DSCR = Rent/PITIA = 2300/1875 = 1.23If a purchase, you also generally need reserves / savings to show you have 3-6 month payments of PITIA (principal / interest (mortgage payment), property taxes and insurance and HOA (if applicable).

I always operate under the principal that each entity is its own business.

What would I need to update / re-file? 

So now i need to file a dispossessory action to evict them under unlawful Detainer.

For a list that small you may get lucky and no one will notice but in general you can easily run into frequent litigators that are just waiting to get called and file suit.

Just make sure you file your taxes correctly.

If you get audited, this will be good to have on file.3) That's tricky, the dash 4 grouping election is based on facts and circumstances.

@Anthony DupreCalifornia is generally more cumbersome than other states when it comes to taxes and filings.