How can time format be retained?

I am struggling to cope with time (aren't we all).
I pick up a range of cells formatted on the worksheet as hh:mm. Put these into a macro and do some sorting. Then I place them on another worksheet but they arrive as time serials. The time serial appears as soon as the cells are placed in the macro.

How can I retain the hh:mm format from one worksheet to the next without having to manually reformat the cells?

Is there a VBA format method for individual array elements.

Any help gratefully received.