If you select a particular episode of a program from the guide and select the simple record option (without selecting a program from the listview) then a schedule is added correctly to record the episode you selected.

If you then select a different episode of the same program and do the same, rather than a new schedule being added the existing one for the episode you selected first is deleted.

User reported thread http://forum.team-mediaportal.com/mediaportal-1-1-0-rc-3-519/mediaportal-does-not-allow-recording-different-shows-same-title-82827/
confirmed by Jameson_UK

h4. Additional Information
Most likely linked to http://mantis.team-mediaportal.com/view.php?id=2928 but slightly different issues and outcome (in 2928 schedule is simply not added where as here it is deleted)

Selecting via the list of episodes on the right hand side does work. This only happens when you do not select an episode