The file {0}' contains one or more custom report items (CRIs) that have unsupported features that might not render in the ...

The file ‘{0}' contains one or more custom report items (CRIs) that have unsupported features that might not render in the same way after upgrade.  Choose Yes to convert the CRIs.  Before the conversion, a backup copy is saved in the current folder.  Choose No to keep the existing CRIs. The CRIs will not be displayed in the report at run time unless new compatible versions of the CRIs are available.