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Adding columns to existing content types - not updating

Posted By:      Posted Date: October 25, 2010    Points: 0   Category :SharePoint
We deployed site columns and content types through xml definitions in features. When we update the content types by adding a new column, new columns do appear in SharePoint Designer 2010 but when pages are created from those page layouts, columns are not visible.

We see this in 2007 and found some solutions but these are code-base. Any alternative that guide us to make changes in the XML or any other file?

Same issue for 2007: 


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