[maxmsp] Error when restoring function settings from XML file

Hi, 

I'm working on a patch that contains function objects inside a poly~. To save these function settings for every instance of the object inside the poly~, I use autopattr. There is one pattrstorage in the mainpatch, and it's presets are written to a XML file.

Okay, now it's kind of difficult to explain my problem clearly, but here goes: 
When I have a function with four breakpoints, (0. 0.) (500. 0.) (500. 1.) and (1000. 0.), so y=0 for 0<=x<=500 and y=1 for x=500 (which should be impossible, for there are 2 values for x=500, this probably IS the problem), it restores this setting incorrectly from the XML file. What should be stored looks like this:  _|\     , but what is restored looks like this:  /|_

This is what is stored inside the XML:

<pattr name="breakp1" value="1000. 0. 1. 0. 0. 0 500. 0. 0 500. 1. 0 1000. 0. 0" />

So the second and third point are switched on restore.

I've noticed that depending on which breakpoint is moved, you can OR cannot place 2 points directly beneath eachother. I suppose it shouldn't be possible, but somehow it sometimes is. Functions that are saved with a patch restore correctly, but the ones that have to restore from an XML don't in this case.
Am I the only one with this problem? It's really inconvenient.

Greetings, Arjen