What's all these _ref_xx object groups?

[vincehgov]

On working on a FWSM using ASDM 5.0F.

I was trying to add another host to one of my object groups but was getting the error "this operation will result in some security rules getting nullified. Please review your translation/security rules before retrying this operation."

Then, when I consoled into the FWSM, I see that there are alot of object groups with the same name but appended with _ref_xx. 

What are those?

Thank you in advance for any help.

V

[Marius Gunnerud]

This looks to be a bug in the ASDM 5.0(1)F

CSCsd77211

http://www.cisco.com/en/US/docs/security/fwsm/fwsm31/asdm50f/release/notes/asdmrn5f.html#wp331494

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