I have changed the default content type from 'Discussion' to 'Message' is on the Discussion Board on SharePoint 2010 and reverted to its normal (Now, Discussion is the default content type).
Now, If I click on the 'Add new Discussion',it is referring the Message content type and opening the window without Subject Field and the saved item is not getting displayed (yes, message content type will not be shown in Allitems.aspx page).
How can I get rid this issue? It should refer the Discussion content type for the Add New Discussion link...