I am by no means an expert on this as i have only been doing lagers/beers myself for a couple of months, although i have been doing wine kits for a number of years. I am hoping that one of the more experienced beer brewers on here may chuck their two penneth worth in at some point!!
I have never done a brupak kit, what do the instructions say with regard to finishing S.G.? There should be some guidance in there.
Different sugars/beer enhancers ferment more or less than others, i am not sure with regard to glucose at what s.g. it should finish. Did you use glucose as your main fermentable?
It is my basic understanding that a secondary ferment takes place when the brew has been racked off the sediment or yeast bed and the 2nd ferment takes place with the remaining yeast/sugars suspended in the solution so long as the fermenting conditions are maintained. It clears once the temperature drops, i.e. you move it to a cold place, stunning the yeast into a sleep state, thereby stopping the ferment.
In terms of it clearing once finished and settleing...... If you do still have unfermented yeast in the brew which is now bottled, my biggest fear would be the integrity of the bottles as the pressure builds and of course it will throw down another sediment, taking a little more space than usual in your bottle, which i think may make it a little harder to pour?.
I am not sure if it will settle and clear from here..... sorry i cant be of any more help. Good luck though.