BUG: Save Package to File dialog is not modal

[glen_kidd]

When the "Export Package to XMI" dialog is activated for a controlled package via <context menu>->"Save Package to File" (or the shortcut), the dialog does not prevent access to the main application window.

Needless to say, there is great potential for a lot of mischief if the repository is changed mid-export. This is especially so on large packages that take many minutes to export.

It is worth noting, that if the "Export Package to XMI" dialog is activated via <context menu>->Import/Export->"Export Package to XMI File" that the dialog is actually modal in that case - go figure!