IIS7 URL Rewrite ignore rules in sub application - iis-7

Question

I have MyWebSite and MyApp as shown below:
MyWebSite
web.config
MyApp
web.config
Pages
page.aspx
I want the next URL will work:
www.mywebsite.com/oldpage.aspx
MyWebSite\web.config add to the URL 'MyApp': www.mywebsite.com/MyApp/page.aspx
MyApp\web.config add to the URL 'Pages': www.mywebsite.com/MyApp/Pages/page.aspx
I want to separate this logic in two rules because I want each rule will responsible for its part. MyWebSite should decide which application is default, if not specified, and it should not know anything about 'Pages' in MyApp.
The problem, that the rule in MyApp is not called.
The question: do I do something wrong? Is this is limitation that I can't perform rewrites in separate config files?
P.S. MyWebSite and MyApp running under the same app pool.
MyWebSite web.config:
<rule name="Add 'MyWebSite' for ASPX pages">
<match url="^([^/]+\.aspx)" />
<action type="Rewrite" url="MyApp/{R:1}" />
</rule>
MyApp web.config
<rule name="Add 'Pages'">
<match url=".*" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false">
<add input="{URL}" pattern="Pages" negate="true" />
</conditions>
<action type="Rewrite" url="Pages/{R:0}" appendQueryString="true" />
</rule>

Answer 1

What you want to do seems possible reading the following blog post: http://www.iis.net/learn/extensions/url-rewrite-module/using-global-and-distributed-rewrite-rules
However, the only way I succeeded in getting it to work was using a dirty trick. I am not sure it would be recommended in a production environment but in case you want to go with this solution:
MyWebSite web.config:
<rule name="Add 'MyWebSite' for ASPX pages">
<match url="^([^/]+\.aspx)" />
<action type="Rewrite" url="http://www.mywebsite.com/MyApp/{R:1}" />
</rule>
I just changed the Rewrite destination to url="http://www.mywebsite.com/MyApp/{R:1}" (I have ARR up and running as well).