Data Layer Priority
Unfortunately there is little documentation on layer priority. The existing documentation in the user guide is about HKCR priority and we are left to assume, that "normal priority" as svscmd calls it, is somehow similar. Moreover I always wondered: does HKCR priority apply to the registry in general or only to the HKCR root key? And if the latter be true, what about the keys that are merged in to the HKCR root key such as HKLM\Software\Classes and HKCU\Software\Classes? Do they have HKCR priority or are there potential inconsistencies created by SWV?
Anyway, here's my actual problem, which does not involve any registry entries but only files, to which I ask your help as to why I don't get the expected result, and how I should solve it.
I have a layer for WampServer http://www.wampserver.com/en/ (Apache2, MySQL, PHP) and several data layers, each to hold a web project including configurations of PHP, MYSQL and Apache. It is obvious, that I first need to activate one data layer only, then activate the wamp layer, so the services should be able to read their configuration from the files in the data layer, which should override the ones in the wamp layer. So, when I change httpd.conf, the web server's configuration is stored to the data layer, however, when I restart apache, it does not read the file from the data layer, but from it's own layer.
As I understand/assume, owner layer priority should be 55.5, data layer priority is 45.5 (as SVS PROPERTIES confirms). So, why does apache service read the "wrong" configuration, and how do I need to set up my layers to get expected behaviour?