HTML5 export with multiplied layers out of Animate CC

Dear Community

I client of mine has recently changed their requirements for online banners and ads from .gif-file to HTML5 creatives.

Before the change i worked with Photoshop to generate the banner. Since PS doesn't support the export of HTML5 I shifted my work to Animate CC which supports HTML5-export.

My problem is that I need to have a multiplied layer in my doc because that is in the corporate design of my client.

Is there any way to export HTML5 with a mulitplied layer? Not just drop the transparency?

Everytime I convert my Animate-file into a HTML5-Canvas it removes the multiplied layer.

Thanks for you help.