AD/LDAP Exchange attributes

Connector cannot "see" some Exchange user attributes. E.g. homeMDB or msExchUserAccountControl and many other.
On the other hand, some exchange attributes like msExchControllingZone, msExchUserCulture etc.. are OK.

Users have these object classes:
user (structural)
organizationalPerson (structural)
person (structural)
top (abstract)

I tried adding missing attributes to schema by hand (see bellow), but mp sees empty value.

<xsd:element maxOccurs="1" minOccurs="0" name="homeMDB" type="xsd:string">
<xsd:annotation>
<xsd:appinfo>
<a:access>read</a:access>
<a:matchingRule xmlns:qn917="http://prism.evolveum.com/xml/ns/public/matching-rule-3">qn917:distinguishedName</a:matchingRule>
<ra:nativeAttributeName>homeMDB</ra:nativeAttributeName>
<ra:frameworkAttributeName>homeMDB</ra:frameworkAttributeName>
</xsd:appinfo>
</xsd:annotation>
</xsd:element>

<generateObjectClass>ri:user</generateObjectClass>