Thanks for the update and adding those items to the list. Two more issues with Build 6928 that I found:
1. The SETTINGS > ANTISPAM > SPAM CHECKS only displays the contents of the first item. So, no matter which user-added Spam Check you chose, unless it is a system Spam Check, it displays incorrectly. For example, our first (of 57) Spam Checks is:
Rule Name: .ASIA
Rule Source: Header
Rule Source: Regular Expression
Rule Text: .+\.asia>?
So, for example, when we attempt to open the Custom Rule CELEBS, CHINESE, FOREIGN, RUSSIAN VOWELS, etc. it shows the same fields and criteria as .ASIA. As these rules are showing correct in the \service\spamConfig.xml I'm assuming that this is a display error in the web interface. (Note: RBLs and URIBLs display item details properly.)
2. Under SETTINGS > ANTISPAM > SPAM CHECKS
we had several Custom Rules disappear during the update/conversion from v16 (about 7 of them), along with 30 RBLs and 12 URIBLs that are now missing and have to be manually re-entered. Many system Spam Checks, such as DKIM, and SPF are duplicated (but oddly not all of them).