Digital Signatures not getting retained in the flattened version

Hi,

I am facing this issue from so long. Not able to figure out what is the issue.

I have a form which sends out an email with flattend version of the filled form to the client. Here I use digital signatures to validate the client.

However when the user submits the form the digital signatures are going to invisible mode in flattend copy. I am using the following transformation

script in my .xci file. If I remove "IfEmpty" part of this, the signatures are visible. But I want to make them visible though the below script is present.

<transform ref="">

</groupParent>

</data<ifEmpty>dataVakye</ifEmpty>

<nameAttr/>

<picture/>

<rename/>

<whitespace>preserve<whitespace>

<presence>preserve</presence>

</transform>

Any ideas on this Please ??