Connector CMIS Get all metadata from Alfresco

I tested the CMIS connector developed in ManifoldCF to transfer data from Alfresco community 4.2.c to Solr 4.5.1. The connection works fine to index the content of the documents. However it is impossible to get all the metadata which are affected by Alfresco to each Document unless I have configured the Solr field mapping in ManifoldCF.
Here is an example of the metadata in Alfresco that I would like to index in Solr : cm:name, cm:creator, cm:modifier, cm:created, cm:modified ...
I think the issue is the url that is being used by ManifoldCf. Do I have to reconfigure the CMIS connector to index all metadata ?