There was a bug reported on the issue regarding selecting curved connectors that have been modified.
I was able to reproduce it, however I am not sure if this bug still exist in 4.0. Can someone please test it? The process is, build a curved connector, modify the way the curve altitude is selected. Select away, and try to re-click on the vector. According to Armin LeGrand he said he was working on similar issues, however this date back to 2009. https://issues.apache.org/ooo/show_bug.cgi?id=101143 -- Alexandro Colorado Apache OpenOffice Contributor http://es.openoffice.org