CQ doesn't pick up nodetypes.cnd changes using Package Manager

Hi,

CQ doesn't seem to pick up the changes in custom nodetype definitions in nodetypes.cnd when I install the package containing the updated nodetypes.cnd using Package Manager, how do I get around this?

Steps

1) fire up a fresh installation of CQ

2) In Package Manager, upload a CQ package containing custom nodetypes.cnd

3) check that the custom nodetypes are registered in Node Type Administration console

4) change nodetypes.cnd by adding a new property in a custom nodetype inside nodetypes.cnd file

5) make a new package with updated nodetypes.cnd file

6) In Package Manager, upload the new CQ package and install

7) check that the new property has been added in Node Type Administration console <-- ***FAIL***

Thanks!