Custom post type and Pro Sites not compatible together?

Hi all,

I just got a weird behavior while setting up Pro Sites. One of my item in my menu (back-end) disappear and get replaced by the "+Pro Upgrade" item. This item is a Custom post type and I can't figure out why Pro Sites take its place instead to add a new item. I use Admin Menu Editor Pro to edit my menu but it's not problem because I deactivated it and no change.

Also try to keep it like that and create a custom menu item to "fake" my Attorneys but when I select the target page, "Attorneys" is not there anymore, "Pro Upgrade" took its place (see 2nd screenshot).

1st screenshot: my menu before and after
2nd screenshot: Menu Editor Pro where "Pro Upgrade" replaced "Attorneys" in Target page.

Thanks for your help.