Any idea how to convert the Proseries PDF file to a single layer PDF? 

I am told by my e-sign software the PDF from Proseries is a multi layer HTML and they only work with single layer PDF. I know this is very easily a tech question just wondering if anyone has found a way to do this? 

I use Microsoft to PDF tool but it turns my 300kB Proseries PDF into a 10,000kB file. 

Just wondering what the community is doing to complete esigning.