Formating Does Not Copy & Paste

Hello-

I may be missing something, but when I try and copy & paste a document from Z Writer into Wordpress, formating such as bold and underline etc. does not carry over. Hyperlinks do, but not bold etc.

This is not a problem in G Docs. I have also noticed that I can copy from Zoho into G Docs without a problem keeping the formatting, but it does not work into wordpress (works in joomla as well)

I would like to use Zoho for all my documents, however the added step up having to bold and underline everything again once I paste into wordpress is a severe pain.

Thanks for any help