Templates are missing in Projects after upgrading from 2018.1 to 2.1 On Prem - On Premise

Products

• CA Agile Central On Premise (Rally)

Issue/Introduction

We have now been using Rally 2.1 OnPrem AirGapped as Production since 10/30/21 and we are getting reports from users that Templates they had in Projects that they used to create User Stories are missing. Is this expected?  Is there a workaround?

Environment

Release : 2.0 and 2018.1 and 2.1

Component :

Resolution

The templates used in 2018.1 are not compatible with the new templates in our 2.1 version of On Prem and will not migrate to 2.x when upgrading from 2018.1 to 2.x.