My thought was, if only inkscape and xara, were able to implement each other's "save as" scripts (or what have you) it might actually be an easier work around than trying to find a way to convert them??
I understand the format ideology, but.. isn't the "save as" process, what defines which format the document is to be processed as? So, if you draw an image in any software... it is not in any format, until it is saved as which ever format... I'm just wondering if this would be worth looking into some more, seriously.

It seems Corel saw this and understood it, and implemented it?