Yes of course, if the oponent kill you 5 models for one unit of 20 models you have to pick one by one and delete with the paper bin. In UB1 you can select the five models and delete in one step. If you do this on UB2, the complet unit is selected.
I don´t see the maps, good to know

if you put 6 more better there are 16 maps in 9th Age.