Thank you @Matthew Giesmann !!  I know a lot of work went into this effort, and that our beta testers have been using this successfully for many months.  

Everyone - please make sure to provide feedback, especially if you see any issues.  After a period of dual-use we will be retiring the old UI completely so if there are reasons users need to keep using the old UI for some reason we need to hear about the details ASAP.  

Are you exporting it as OBJ-only, or are you okay exporting it for a previous version which they will then load into their instance and compile?  

E.g. if you use Do $System.OBJ.SetQualifiers("/exportversion=2017.2") it will export the code in Caché 2017.2 format.  *However* this will not catch if you use syntax or updated APIs which were not supported in 2017.2.  You should really get a copy of the target version of software from the WRC (kits or containers) and at least do a compilation test there.