AutoCAD Copy/Paste Problems

[Molten]

Ok, first off the situation: I'm drawing up the floor plan of a factory. Engineers send me their rough version of what it should look something like and I go out on the floor and make it match what it actually is. Sounds easy, sort of is...Except, now I've got a problem.

The Problem: When I go to copy their drawings into the main layout, the text gets changed. Below is an example. Also, I lose all of my groupings.

My attempts to fix: I've tried to do a similar thing in two new files and the text copies over without any trouble. I still lose my groupings. This tells me that it cannot be a computer problem, or a setting. I tried copying and pasting with objects in addition to text and that still happens. I have no clue what the problem is and will try anything to fix.

About the attachment: This is a screen shot of what happens when I copy/paste "Work Bench". I know I could fix this by mirroring each text file. I have done this for about a 5% of what I've drawn and know that it takes forever. What's more is that it is going to get copy/pasted by someone else who will also need to do all this. Overall, costing the company a hefty fee.