Issue with multiple annotations in single xfdf

Hello ,
Thank you for the reply. But actually we are deleting some annotations at a same time and when annotations gets deleted , if we undo the changes, as expected ‘annotationChanged’ event generates annotation object for each deleted annotation separately but while generating xfdf it supposed to generate xfdf separately for each object of annotation but its not happening at all. instead it generate multiple annotations in single xfdf and for the remaining annotation it generates empty xfdf strings.
if its a bug then could you please tell us when will it get resolved and resolved.

Thank you,
Vivek Sonawane