I had downloaded all of the ledgers from the online portal .4 days after the relationship ended we started the process of auditing each property.

You have to audit all of their accounting because inevitably late fees will change every statement, utilities are sometimes billed back (or not at all), and god speed if you have a delinquent tenant.

Have you been audited before by IRS regarding a cost seg.?

Also, find out what fees you will incur with your provider as you may have to run an annual legal audit for each investment your checkbook llc holds.

I don’t know how well this will hold up in an IRS audit so be careful, but it seems like this level would be most appropriate for a residential property.

ACH bank to bank and zelle  not through a third party platform I believe are the only ones not currently slated to issue 1099s since it is bank to bank but if you get audited the government will look at those as well. 

But you will not believe me unless audited.

Joe mentioned one above - will the documentation provided from the study hold up in an audit.

I have read that it is incredibly important to keep your business finances and your personal finances separate should you either be audited or sued in the future.

Yes for someone who is working full-time, you will definitely want to make sure you have solid documentation to substantiate REP status as that is something the IRS would likely challenge IF the return is selected for audit.