[OpenLayers-Trac] [OpenLayers] #3332: BBOX upload on zoom resets feature.state

[OpenLayers]

#3332: BBOX upload on zoom resets feature.state
---------------------------+------------------------------------------------
 Reporter:  mno            |       Owner:  tschaub
     Type:  bug            |      Status:  new    
 Priority:  minor          |   Milestone:         
Component:  Strategy.BBOX  |     Version:  2.10   
 Keywords:                 |       State:         
---------------------------+------------------------------------------------
 After changing zoom level (which triggers uploading additional features)
 features with state UPDATE or DELETE have their state reset to null.

 If I understand correctly Styles/BBOX.js has function merge. Comment to
 this function says "Given a list of features, determine which ones to add
 to the layer.", but in the first line We got this code:

 this.layer.destroyFeatures();

 which cuts all features from layer (including items with UPDATE/DELETE
 state).

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Ticket URL: <http://trac.openlayers.org/ticket/3332>
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