There seems to be a "view refreshing" bug in the "Import structure from database" window.
Having two data sources (let us call them ds_A and ds_B) defined in the Configuration.xml file and the ds_A is defined with a data base user which has not sufficient privileges or even doesn't exist on the specified data base.
(1) After choosing ds_A as data source in the "Import structure from database" window, there is no entry in the "Schema name:" list (the button is disabled) -- works like expected.
(2) After choosing ds_B, we can see the schemas according to the ds_B definition -- works like expected.
(3) After choosing the ds_A again, the schemas (of ds_B) are still available -- this isn't the expected behaviour, has to be like in (1)
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