Dottie
Although you called this a new claim for PIP it was not and counted as a transfer as you left your DLA in payment.
The rules for transfers are that the PIP does not become payable until four weeks after the Decision is made.
If you had closed your DLA claim before making the PIP one then it would have been backdated to when you claimed PIP.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems