Do you mean that after deploying the report the "Always one selected" propery is lost?
If you reduced the data too much, it is possible that the "List Box" was left with no data, and the option of "Always one selected" will be lost.
Please check if this is not the case and let me know.
We are on the latest SR on Qlikview 11 and have been noticing this when we move an application to QA or Production. The always one selected option appears not to be working, but if the user goes to reset document state, then shortly after pushes view in full browser the always one selected works. I'm going to assume this is an AJAX issue that was introduced with the last update because it didn't occur prior to SR 11.2. ver 13