If you want to upgrade a customer's database from Dynamics NAV 2013 or Dynamics NAV 2013 R2, you may have noticed that the latest Dynamics NAV 2018 cumulative update does not have a direct path to upgrade from these earlier versions.
The solution is to upgrade to Dynamics NAV 2018 Cumulative Update 2, and then upgrade to the latest Dynamics NAV 2018 cumulative update.
For more information, see Upgrading to Dynamics NAV 2018, which has been updated accordingly.
We hope this helps those of you who have been confused about Dynamics NAV 2018 Cumulative Update 3, and we apologize for the experience you had. Going forward, please use the processes outlined in Upgrading to Dynamics NAV 2018.