Checked items in the inbox not disappearing

[EmDotIn]

Using OmniFocus 1.9.1 on iPhone 3GS (v4.3.1) and OmniFocus 1.9 on MacBook Pro (10.5.8) all of a sudden when I check Inbox items on the iPhone, I get the checkmark and strikethrough of the item text, but it doesn't go away.

When I do a Cleanup on the Mac, inbox items disappear like I'm used to. No amount of syncing cleans it up on the iPhone.

What am I doing wrong, or what setting have I munged up?

Thanks in advance!

[EmDotIn]

OK, so one of the Omni Support Ninjas suggested this and it worked perfectly:

Go to OmniFocus on the Mac

In Preferences > Data, make sure the "Clean Up completed Inbox items" and "Immediately hide completed items" boxes are checked.

Sync OmniFocus for Mac

Open OmniFocus on the iPhone and do a Sync

Problem solved. Thanks so much to Jameson Brown "Support Ninja"