Because on OSI, that swamp was evidently unplaceable, while others were. Surprisingly (or not) many people here actually did not recall that. Might take a gander at the accuracy thread that brought it up: viewtopic.php?f=8&t=37391Zippy wrote:The ones I'm thinking of are the ones in the swamp east of britain. Plus I just don't get how some swamps are placable and some aren't.
When possible, and not game-breaking, patches usually grandfather here. This is also largely the same as OSI. There were (and likely still are) several obvious houses which break placement rules on the official servers. There were also many, many more which broke later placement rules (like half of felucca was illegal after the ren-era placement rules), yet were not demolished.
The shard's a work in progress. Stuff will get overlooked, some will lack evidence, and some there just hasn't been time for.