Hello Erik
how are you getting on with your quest ?
The good thing with PDMLink is that it is very flexible and it will let you change Number, Name and filename of the EPMDocument, as well as WTpart very easily.
We had to go through such exercices (not because number, name and filename were the same) where we had a script developed for us. The script is ran from the Windchill Shell and read a csv file.
The csv file contain the Number of the object that need renaming, and the new number, new name, new filename.
This has worked very smoothly. We changed about 15 000 EPM/hrs and WTpart were a lot quicker.
The thing that took time was that changing such fields, imply to "refresh" other object that may use that field. For us it was the BOM tables on the drawings. Some were created without repeat regions, or just as text. We had to developed other scripts in weblink to modify all the impacted drawings.
Furthermore, we use an application that create pdf outside pdmlink on release of 2D drawings. Obviously, even if your BOM table is properly created (ie when you open the drawing in ProductView or ProE the BOM table update automatically correctly), we still needed to republished the pdf which were outside of PDMLink to ensure they showed the correct new Number, Name etc......
That was actually took the longest.
Let me know if you want to discuss more in details
Best regards