This might mean you got Mercator from JDE, since they use it with their product and resell.
Zero training would never make it. There have been many changes between 5.x and 7.5.1, many customers used bugs in 5.x that were fixed in later versions and cause their maps to fail or produce different results. Depending on where you are located, you will have a choice of contractors. I have seen some really screw things up (but I can't mention names). One of the safest bets is Ascential Professional Services. Start with a review by a Solutions Architect to see if the system needs to be redesigned, the you can get an estimate of the work needed to convert. Remember, all the SAP type trees are imported, so they will need to be re-imported and re-mapped.
You will also need to contact JDE to make sure your systems will be compatible with the JDE version you are using.
Good luck.
We in Support will help as much as we can.
BocaBurger
<===========================||////////////////|0
The pen is mightier than the sword, but the sword hurts more!