i figured out_ that some manipulation with <UrlRewriter> sections helps, but when i Try open discussion forum of group it ends with MonoX report error file not found.
changed TO= condition....
<rewrite url="^(.*)/search/(.*)/(\?(.+))?$" to="social***.co.cc./MonoX/Pages/MonoX/SearchResults.aspx?srchq=$2&$4" name="SiteSearch" urlPattern="/search/{Query}/" />
<!-- dynamic group rules, can be used regardeless of the actual name of the page that holds group parts -->
<rewrite url="^(.*)/(.*)/GroupView/(.*)/(.*)/(\?(.+))?$" to="social***.co.cc./$2.aspx?GroupId=$3&$6" name="GroupView" defaultPage="/MonoX/Pages/SocialNetworking/Groups.aspx" urlPattern="/{PageName}/GroupView/{ShortId}/{Slug}/" />
<rewrite url="^(.*)/(.*)/GroupEdit/(.*)/(.*)/(\?(.+))?$" to="social***.co.cc./$2.aspx?GroupId=$3&EditMode=true&$6" name="GroupEdit" defaultPage="/MonoX/Pages/SocialNetworking/Groups.aspx" urlPattern="/{PageName}/GroupEdit/{ShortId}/{Slug}/" />
<rewrite url="^(.*)/(.*)/GroupList/(\?(.+))?$" to="$1/$2.aspx$3" name="GroupList" defaultPage="/MonoX/Pages/SocialNetworking/Groups.aspx" urlPattern="/{PageName}/GroupList/" />
<rewrite url="^(.*)/(.*)/GroupInsert/(\?(.+))?$" to="$1/$2.aspx?InsertMode=true&$4" name="GroupInsert" defaultPage="/MonoX/Pages/SocialNetworking/Groups.aspx" urlPattern="/{PageName}/GroupInsert/" />
<rewrite url="^(.*)/(.*)/GroupSearch/(.*)/(\?(.+))?$" to="$1/$2.aspx?SearchValue=$3&$5" name="GroupSearch" defaultPage="/MonoX/Pages/SocialNetworking/Groups.aspx" urlPattern="/{PageName}/GroupSearch/{SearchValue}/" />
<rewrite url="^(.*)/(.*)/GroupSearch/(\?(.+))?$" to="$1/$2.aspx?ShowAllGroups=true&$4" name="GroupSearchShowAll" defaultPage="/MonoX/Pages/SocialNetworking/Groups.aspx" urlPattern="/{PageName}/GroupSearch/" />
<rewrite url="^(.*)/(.*)/GroupCategory/(.*)/(\?(.+))?$" to="$1/$2.aspx?Category=$3&$5" name="GroupCategory" defaultPage="/MonoX/Pages/SocialNetworking/Groups.aspx" urlPattern="/{PageName}/GroupCategory/{CategorySlug}/" />