export -> properties -> property should be minOccurs=0

[merrycoder]

Problem description
It should be possible to create an empty importfile to remove all properties of a given owner from a platform. This is currently possible with IDX.

Desired Solution
Make export -> properties -> property minOccurs=0 instead of minOccurs=1

[jensstalder]

Thats correct that was in the original implementation. Its important that <properties /> is present however, this would represent a empty delivery.

aka.

<export>
   <projects></projects>
</export>

Would delete all projects but would leave properties alone. This will make possible seperation of project and property (or some other future resources) delivery in the future possible.

<export>
   <properties></properties>
</export>

Would delete all the properties

<export>
</export>

Would do nothing.

What do you think? This would probably be the result in having minOccurs=0 instead of =1 .