Custom areas generated using the shapefile importer may look slightly different in Local Insight than they do in your GIS platform. This is because of the generalisation of boundaries. This is a measure of how precisely defined the edges of the areas are. We have chosen the current level of specificity in order to optimise area creation and data aggregation for those areas - the more detailed the area, the higher the strain on our system.
Please note:
The generalisation of boundaries will be the same for each area and will not be editable.