I can correlate this CK release with any of DF releases..

I have DF 20.0 latest upadate release installed here (DF, and the CK that I have installed is

DataFlex 2021 Studio 20.0 -

Runtime Version: 20.0.7
Package Version: 20.0.1
FMAC Version: 20.0.112
Javascript Engine Version (MASTER):
Javascript Engine Version (WORKSPACE): 
Platform: 64-bit
Database driver(s): DATAFLEX, MSSQLDRV (, DB2_DRV (
MSSQLDRV Client Version: SQL Server (SQL Server 2000 client)
Not sure where this 20.0.19.x you have came from.. maybe you have an intermediate special release between this and 20.1 base ?