[OSM-talk] Rendering issues with Carto 4.0

[Sandor Seres]

I am not sure if I understand correctly the following extract from your letter  
>>
... In a huge effort in the last months we have removed old-style multipolygons from the OSM database completely, so this is a good step!...
>>
If Carto Style 4.0 ignores the mentioned cases, it is OK for us, users of the OSM source data.
If the mentioned cases are removed from the OSM source data, it is very wrong and not OK at all. This will cause lots of white/empty spaces in our maps compared to the former status and our maps will look poorer. Also, if the mentioned cases are removed by osm2pgsql, this is still OK for us starting our preparations from the OSM source data.
Please help me with a correct interpretation of "OSM database" in your letter. 
Thanks, Sandor.