We made the switch from the Cadworx 2017R1 to 2018 beginning of this year. I wish we could have gone back and stayed with the 2017R1 version. We have had lots of issues with the 2018 software. The Structure still is not that great and the solids and centerlines are always disconnecting. We are constantly having to go back to the model and solid convert then save to update in the model it is xref'd into. You will have lots of workarounds that they just don't seem to fix.