Is it possible to downgrade or upgrade only dhcp package?

My hardware is CCR1009-8G-1S-1S+ and upgraded OS from 6.20 to 6.24

I guess I have some problem about dhcp after upgrade OS from 6.20 to 6.24
(refer to my topic http://forum.mikrotik.com/t/problem-logged-out-lost-dhcp-lease/84646/1 )

So I want to downgrade only dhcp package back to 6.20.

Is it possible to downgrade dhcp package ? and how?

Just copy file dhcp-6.20-tile.npk to my board and click downgrade, is this correct solution?

Thank you.

all packages are connected and need the same system version.

Thank you Normis.

And could you please advise my question on this topic?

Problem - logged out: lost dhcp lease
http://forum.mikrotik.com/t/problem-logged-out-lost-dhcp-lease/84646/1