Our Hall passed a resolution based on the Society's review of the Congregation's articles of incorporation. It was resolved to change the dissolution clause so that if the Congregation is ever liquidated, the proceeds for the sale of the property automatically goes to the WTS.
This "suggestion" was based on the WTS legal department's review. Of course, the local congregation did not retain their own counsel for legal advice in this matter.
The Society has a form that the Elders fill out to disclose the ownership arrangements and then the Society provides their advice on the adjustments to make. This seems to be a systematic way of ensuring that all assets eventually end up in the hands of the WTS.