A Mainframe Express Enterprise Edition 3.1 customer wants to use the "Force Program PHASEIN" option on the  "Developer" tab of "SIT properties".  This should reload programs each time they are called.  However the option seems to be ignored and the Old version of the program is always used.

This can occur if the programs have been marked RESIDENT or have been loaded with the HOLD attribute.

A program can be marked as held when it is loaded by "EXEC CICS LOAD PROGRAM" with "HOLD" option
A program can be marked RESIDENT in the PPT. (on the Advance Tab of the PPT Properties.)

Ensure that these options are not set and retry the program.