The documentation of 'uxdlt cal' states in the examples that a range of years can be deleted from a Calendar:
Delete the years 2010 to 2016 from the calendar for the HEADQUART Management unit:
uxdlt CAL MU=HEADQUATER SINCE=2010 BEFORE=2016
However, the command 'uxdlt cal' with or without the SINCE and BEFORE parameters always deletes the entire Calendar
Dollar Universe 6.x and 7.x
DE122814
Update to a fix version listed below or a newer version if available.
Fix version(s):
Component: Dollar Universe Application Server (Node)
Dollar Universe 7.01.21 - Available
Public Title: The "uxdlt" command is deleting the complete calendar object.
Public Description:The command "uxdlt" on the calendar object is deleting the complete calendar although we provide "since" and "before" params. Based on the params, it has to delete those years only which is a partial delete.