Yeah, unfortunately because the Import Delimited Command from Stata automatically recognizes all delimiters, the commas in some of the PAC names will throw off the import. The key is to do a find and replace in the text file where you replace all pipes with quotes (Find: | Replace with: "). Because these files are so big, it was my experience that the find and replace actually takes a few minutes, and is fastest on computers with more memory.
After you've done the find and replace it should be a fairly straightforward import.
Hope this helps!
CJ