No, just inform them you are the new owner (they may want proof) and provide them with the address to send payments. 

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.

Build 2 or 3, get them running, collect some cash-flow, and see how the business goes.

Tenant move out in the middle of eviction process and we are unable to serve him.Any suggestions on how to proceed with money judgement as we cannot locate him to serve him ? ( Des Moines , IA )

If she pays, then your really out of luck and you have to sue her in court for breaking the lease and damages.In general, I don't take people to court once I have the property back as the attorney fees and the fact you RARELY collect on any judgements (15% of the time or less) eats any profit and wastes your time.

My strategy as an investor has changed over the years, today I look at real estate more like a collection of properties and less through the cash flow lens.

For example:Current rental unit: you collect $2500 in rent.

When we deal with these, we let the tenants know that we will be putting them into collections and seeking a judgement. 

Certain expenses are all lumped together for the sake of the P&L like insurance and taxes and others like repairs and maintenance can be viewed collectively or by individual property.

I have a C-Corp (no assets) as the Prop Manager  to manage leasing and rental collection for all 4 LTRs.