It has been a while since I verified this, but can anyone tell me for sure that I can run PDM Professional 2018 on a 2019 SNL server?  I am looking at upgrading just our division since we do not share files with other divisions and would like to take advantage of some of the features in 2019.  But want to ensure the other divisions that if we upgrade the SNL server to 2019 that it will not affect their 2018 PDM.