A very common feature introduces in MDT 2010 copy and paste actions between Task Sequence.

In MDT 2013 Update 1 the content of a copy / paste “command line” is missing some times

I am use to copy a action group from one Task Sequence to another

And since MDT 2010 it has been working – but in MDT 2013 Update 1 the content of a “command line” is missing after i paste it into a new Task Sequence