The servicers have to send notices 15 days prior to the transfer, but the new servicer is required by law to honor any payments made to the old servicer for 60 days.

If the proper reports and documentation are not completed, you run the risk of failing an IRS audit and the cost segregation not being honored.

Quote from @Sean Gallagher: If there is an existing lease, you must honor it.

I was honored to share my entire story on the BiggerPockets Rookie Podcast Episode 441, go give it a listen!

With the numerous investors on this forum they have done this to, it is probably just the tip of the iceberg. 

Some hotels actually have a condo like structure, where people can own the units, but perhaps are limited on their personal use to only a certain amount of the year - the rest of the year it is in the rental pool managed by the hotel.If numerous room owners stopped paying their bills, you could get tax liens on numerous separately owned units.Hotels are a tough business, an issue I also see come up with them often is that they require refreshes, expensive and relatively often - at least once every 10 years, if not more often. 

You must give proper notice before each showing, you must give the renters the opportunity to buy the house first, and the new owner will have to honor their lease if they intend to stay.

If they have an legally binding agreement, you need to honor that agreement and pay the fee.If you failed to mention to the agent that they are going to get paid, and then explained how, of course they won't present the offer.

There are numerous professionals in these forums.

In New Jersey, there are numerous brokerages to chose from, and I highly suggest you do a google search and look into 100% virtual real estate brokerages in New Jersey.