Tier 17 maps from the Necropolis series cannot be upgraded to Settlers

The vendor only offers a wisdom scrap for a T17 map:

https://imgur.com/a/Sy8Z6nJ

Since the map is technically a Necropolis series map, it cannot be put into a Settlers series map tab.

I have *not* tried using the Convert Maps buttons in my Necropolis series map tab. Since the vendor recipe is not working, I don't want to risk anything going wrong with the stash conversion.

I did use convert, it will just skip all T17 maps, and they still cannot be packed into settlers series map tab manually.