Hi @jturley. @vidgen was kind enough to share a script that he wrote in R that makes anonymisation easy. Here it is: Making your network anonymous.
If R is not your think you can achieve the same thing by exporting the survey results to Excel and then changing your name column to say Name 1, Name 2, etc. You would then use an INDEX(MATCH()) in Excel in order to replace the Source and Target with your anonymised names before re-uploading that anonymised network.
You may also want to upload this feature request that is a request to automate this as a feature in Polinode: Anonymizing Data - #3 by vidgen