By "motherclubs" I mean, that they are the clubs whos professional department at one point created the new clubs, and they are therefore in theory the amateur department (or 2nd, 3rd, 4th team if you will) of the new clubs. For example B1903 and KB became FC Copenhagen, but continue to function at amateur level themselves - but they can not play in the cup, as only the first team of a club can - which for both teams is now FC Copenhagen. Hope that makes sense :-)