Has anyone tried QC - JIRA Integration using HPE ALM Synchronizer ?

Hi,

I am doing a POC on QC JIRA Integration, for which I am using HPE  ALM Synchronizer.

If anyone has used it, I would like to know about following questions:

1. When I set up a link between a QC  project and JIRA project when both of the projects have existing records, will it synchronize existing records as well? 

My requirement is to synchronize the recent records, not the existing ones. 

Is it possible?

2. Do I need to set up the HPE ALM Synchronizer on every system from where  the changes can be made to either end [JIRA or QC]?

3. If User B updates the records in QC or JIRA project from System Band, User A runs the synchronizer from System A, will the synchronizer synchronize the records?

If anyone has used this tool, please respond.

Thanks !!