Mnjae... ...-It can be unmerged, but the name of the packs unmerged is not the original, but a string of numbers. :(
You'll have manually check one by one what they contain, unless a program called 'Packer'(?) can help you there (my memory eludes me).
-and, sidenote; I have packages waaaay over that '200mb-limit''... I haven't had a problem with that.
-And Yes, It cannot be said with enough pondus... -Sort stuff before making several-gigabyte-.package-files.
I have five(!) conflicts, but five wild horses and a bear must rip me apart before i sort them out, due to the size/time it will take to unmerge. :s