RQM+RFT:when running RFT script on RQM, is it run by the RFT adapter user or not?

In RQM4.0/Tomcat+RFT8.3 .Net(2005 VB.Net) environment, the user currently sees two problems:
1) When running the script via RQM and RFT is located on another domain, the start window never appears and the log is empty(as if it is run on the GUI but nothing happens)
2) The RFT adapter have many duplicate records in adapter console

According to the below technote,

http://www-01.ibm.com/support/docview.wss?uid=swg21321706

duplicate adapter could be seen when
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the user running the RQM adapter does not have full access control for the RQM adapter directory. The adapter attempts to save its internal ID to the adapter.config file. If the adapter cannot save its internal ID to the adapter.config file, a new internal ID will be generated every time the adapter is started. When a new internal ID is generated, RQM creates a new adapter with a duplicate name.
**
Although this is an issue from RPT adapter, I guess it should apply to RFT adapter as well(the file to store internal id  and location are different though).
The adapter user usually is from local Tomcat user registry(or WAS) and not a part of local user group.
The question here is:
1) When a script is run from RQM, is it run by the RFT adapter user? Based on the above technote, does that mean
we need to add the normal RFT adapter user(to login to RQM) to the local user group and assign the permission to the configure file to avoid creating duplicate adapter entries?

2) In an environment where RQM and RFT are on different domain, is that anything we need to be pay attention in the user permission/shared location etc in order to make the playback work properly?

Thank you very much in advance for any inputs.