The template scheme doesn't seem to be correct. On the Portal, in a similar topic on the Balance section, there are zones 11 and 12, with a passage from the start and leading to zones 3 and 4 (similar to 6-9, but directly to both).
Every time I generate the template, it always turns out like that. And I downloaded the RMG file from here.
Are you trying to show off your knowledge of the game? :D
The reason is that the schemes for size L (Pit also labeled it in a larger, bolder font) and for size L+U, XL (which is shown on the Portal and on the Dreamcatcher website) are different.
For L+U and XL, zones 11 and 12 are indeed generated, but how did they appear in your L-sized map? :confused: