Upgrading Records Web Application - do we need to reinstall DAR files

I am upgrading Documentum Records from 16.7 to 20.4.

When I read the OpenText™ Documentum™ Records
Deployment Guide and chapter 6 Upgrading a WDK-based application I see no mention of DARS. I only see different record dars mention when reading Chapter 5
Installing the Documentum Records Client and its
Records products: RPS, RM, and PRS.

I am not doing a fresh installation but an upgrade. I have installed the dars in the previous release.

Do I need to re-install the dars?

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