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I have input polygons that consist of multiple disconnected rings (as islands) and I am generalising them and removing islands of less than a certain area. I am using Generalizer, DonutHoleExtractor, SpatialFilter and DonutBuilder to do this and it works well, but the resulting layers are now individual polygons. I want to combine the polygons as rings in single polygons based on a unique ID. Can someone recommend a method of doing this please?
I think you want the dissolver and possibly the featuremerger.  
Hi,

 

 

Have a look at the aggregator, you can combine all the polygons into one aggegate.

 

Itay

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