Symptom, when inserting a signature to a reply email on the iPad, the Apple Mail application opens a brand new email instead of inserting into the existing email.

Unfortunately, we have no control over the difference in behavior on the iPhone and the iPad, since this is how the Apple Mail app responds on each platform.

We have put in a bug request to Apple and hope to hear a positive response to the problem.

We are also investigating other ways to workaround the issue if they decide not to fix the bug.