eligible for a listing in both categories?

Hello
Im ( www.canadianpwc.com ) listed in http://dmoz.org/Regional/North_America/Canada/Recreation_and_Sports/Boating/
i would like to also submit to http://dmoz.org/Recreation/Boating/Power_Boating/Personal_Watercraft/ but i dont want to my regional to be removed. If i submit to personal_watercraft do i need to give any extra info about the regional listing.

Sites listed in Regional are frequently eligible for an additional listing in a Topical category. Check the category description to be sure your site meets the criteria, and if it does go ahead and suggest it there.