The Author's name won't show on grouped products

I've noticed that the author's name won't show on grouped products. It works fine for simple products, and I see in the code where it's getting the author's name (simple and grouped products share the same line of code), but on grouped products it doesn't show the author's name. Any help, comments, or suggestions are greatly appreciated.

Simple and grouped template are different even if code is this same for particular part. Like prices, you will see line which generating price, but in build function for grouped adding "From" string before price. So it is much deeper.

There is no field "Author" by standard installation. Which field you are using for that purpose?

Regards,
Tom

I presume you forgot to update \Views\Product\ProductTemplate.Grouped.cshtml