Must be nice to have so much money that you don't have to worry about what a tenant did to your 3yr old floors! Yikes 
I would guess that some kind of poly was used to seal them if they are only 3yrs old. I know they used water based poly in NY but not sure if these floors here are water base or oil which makes a difference in many cases.
I believe these are also water based based on how they react to the steam cleaner they get a bit tacky till they are really dry dry if I stay in one spot too long!
Perhaps you could try different things in an area where it won't show. Try the Murphy's even the Dollar Store verison & see if that works for you. If that doesn't work I would try ammonia & see if that breaks it down.
I have some Future Premium Floor Finish you know wax for the kitchen that says it's acrylic protection but not to use it on wood floors. I also picked up a bottle of Holloway House Quick Shine a floor finish for Wood floors but after reading the bottle closer I'm afraid to put it on!
The area by my front door is starting to show some sun damage (9yrs) the door is left open in nice weather & it gets the southern sun. I thought maybe this would work rather then clearing the whole room 25' by 20' & coating the floor with more poly myself or calling in someone to do it I could use this but after reading online some not sure I want to start this. It's a polmer base & I'd have to do the whole floor same as reg. poly plus I'm not sure how it would hold up. Plus it says if you want to take it off you have to use their stripper!
If I'm going to do all that work I'd rather just put 2 new coats of a good poly on it & get it over. My problem is the room is in the middle of the house you have to walk thru it to get anywhere & the dogs nor DH get that you can't walk on it till its dry! Actually I'd have more luck getting the dogs to listen then DH.
LOL
For now I have a 5 x 10 area rug down so it's not getting worst & you really can't see it, it just bugs me cause I know it's there!
Good luck
Jill
p.s. maybe you could call a flooring place or Home Depot??????