Apply planet.diff to MySQL using osmosis

I wonder if it’s possible to use osmosis for appling a planet-date.diff.xml file to an already populated MySQL database.
I tried:

osmosis  --read-mysql host="localhost" database="openstreetmap" user="openstreetmap" password="***" --read-xml-change file="planet-080507-080514.diff.xml" --apply-change --write-mysql host="localhost" database="openstreetmap" user="openstreetmap" password="***"

which gives this error:

com.bretth.osmosis.core.OsmosisRuntimeException: Task 3-apply-change does not support data provided by default pipe stored at level 2 in the default pipe stack.

Any suggestions?