Why did they repair the first Technodrome when there plenty of them?

[neatoman]

In the season 3 finale, repairs on the Technodrome from season 1 were completed. They even said the repairs had been going on since it initially crashed. But why did they bother? The Kraang were shown to have plenty of working Technodromes half a season earlier, the climax of the return arc hinged on it. What was so special about that particular Technodrome?