They will move forward again. Bees move upward as they eat through their winter stores, then as is normal for them, the start working down again as they brood and layup the empty combs. As they fill the queen works down again. Flipping brood chambers just gets her down quickly, but in ULBN management its not entirely necessary.
In a TBH since there isn't vertical expansion, the brood nest ends up getting pushed to the bottom half of the combs as the season pass. This is normal, and the norrow/shallow brood nest is nothing to be concerned with. In fact, it helps force a beekeeper to leave on enough honey stores for winter. Anway, the cluster will move to the top of the hive and work backwards if things work out right. When spring comes, they don't have to move "down", they are already "down". The only reason why they stay "up" in a lang, is because they like to be up and only move down as they brood up the combs, then as the bees emerge those cells get filled with honey pushing then down. ANyway, in a TBH its not the same, they are already where they need to be, and they will probably leave 2 or 3 combs in the front alone with honey, water and pollen and brood slightly farther back, but I think this get pushed backward only happens once (unless you undo it) because they prefer to have a little insulatation between the nest and the cold outside.
Scot Mc Pherson<br />McPherson Family Honey Farms<br />Davenport, IA<br />BeeWiki: <a href=\"http://beewiki.linuxfromscratch.org\" target=\"_blank\">http://beewiki.linuxfromscratch.org</a> <br /><br />Pics:<br /> <a href=\"http://linuxfromscratch.org/~scot/pics/bees/\" target=\"_blank\">http://linuxfromscratch.org/~scot/pics/bees/</a>