HTML tags stripped

Hi @jpuri first of all, thank you for all your great work on this suite of projects for the react-draft-wysiwyg editor. Everything is working great, the only problem I am running is that enclosing DIV tags are getting stripped out somewhere. Basically, I have a templating system that should include some Bootstrap classes and they are all getting stripped out (not sure if this happens in draftToHtml or htmlToDraft functions. I'm using both of these plugins to handle HTML in / HTML out. Can you tell me if there is a workaround for this? Here is some sample code (assume that the argument 'newContent' looks something like this):
const newContent = '

<iframe width="250" height="141" src="https://www.youtube.com/embed/E0tgKVOxihI" frameborder="0" allowfullscreen></iframe>'

appendContent = (newContent) => {
const { editorState } = this.state
// const content = stateToHTML(editorState.getCurrentContent())
const content = draftToHtml(convertToRaw(editorState.getCurrentContent()))
console.log(newContent)
const newHTML = htmlToDraft(<div>${content}${newContent}</div>)
const state = ContentState.createFromBlockArray(newHTML.contentBlocks)
this.setState({
editorState: EditorState.createWithContent(state)
},
() => {
this.setState({ dialogOpen: false })
console.log(draftToHtml(convertToRaw(this.state.editorState.getCurrentContent())))
}
)
}

When I go to pull the content as HTML, all of the DIV tags are gone. Can you tell me if there is a work-around for this? Thanks, Steve

Start by reproducing the reported round trip through htmlToDraft and draftToHtml using the provided DIV with Bootstrap classes and iframe. Trace where the enclosing DIV tags are handled, and consider the work complete when the classes and DIV structure survive conversion back to HTML.