I can not do a execution of ejectment because the case was never filed in court.

In the meantime I will continue the search for a new PMC and talk to our lawyer with the intent of filing a suit since odds are it will be needed. 

I'm thinking that I need to go to an electronic receipt tracking system, I've been doing it old school all these years - dump them on my desk, some month down the road go through them all and file them to folders for reach property, start a new folder each year. 

Also what is the process to buy a bankruptcy home?

It’s free and that is one way to get free listings.judical states also have to file a lawsuit and you can search civil suits or contact sheriffs offices to get the calendar and listing for foreclosurespaying for a site is all in one and maybe worth it compared to how much time you are spending searchjngif you stay in one area then I recommend what I mentioned  

Now, the contractor is threatening to file a **lien** on the property, which could cause major delays and additional expenses.

Why do you think they "lost your file"?

We have a partnership entity, so it has to file separately and needs balance sheet accounting.

Will be a better question for your CPA in my opinion, they'll have better visibility into what strategy will work best before filing season and EOY. 

Lien is filed and recorded and then do nothing until it gets paid or property is sold and is paid ..