The file ".connectionProfiles" is allways overwritten with a blank standard profile each time you change anything in the start-dialog.
You can change the ".connectionProfiles" by any text editor, but when you use "save" or "save/connect", the file will be overwritten!
Chosen (preselected) dbs are not saved e. g. the entry is ignored.
btw: It's jHeidi on WinXP SP2