Controlling Portfolio Image Titles

I've been exploring using LrC Collections, aka Lr Albums to load images to an Adobe Portfolio website. It seems to work well.

One question that I've not found an answer to is about the Title and Caption. If the image has a title it is used as the image tile in the portfolio, likewise for the caption, it becomes the image title.

However, if an image in Lightroom has both a title and a caption the portfolio seems to prefer the caption. It will not show the title as the title if the image has a caption.

I can setup my images appropriately to support the portfolio behaviour but I'd like some control.

Does anyone know of a setting anywhere in Adobe Portfolio where this can be controlled?

Thank you for your help.