CatalogItems 2020-12-01 - data missing or always null

[hackmyisbn]

Hello,

Recently I upgraded my connection from MWS Products to the newest Catalog Items SP-API, and everything is working great. The one issue I see is that there are still data points that are missing compared to MWS. (Publication Date, Edition are the important ones) As someone in the book world, having this data is rather important.

Also, I am retrieving SalesRank data as well, and I can see each sales rank that applies to the item in question, but the Rank # (the int) itself is always being returned to me as null. is this a known issue? Is this intentional? Can this be fixed? Am I doing something incorrectly?

I have been digging through the forums etc and see that recently the attributes includedData was opened up, which is great, but the above 3 data points are still missing. These data points go a long way in describing what the book is, and allows our systems to make business decisions based on the data.

At this point, I will have to keep using the MWS API until EoL as these 2 points of data are quite important information for all books

Thank you!