Delargy
We occassionaly hear of a failed ESA claim causing a re-assessment of a DLA claim, however, I can't remember ever hearing of a failed DLA claim affecting and IB or ESA one.
The very worst that could happen is that it initiates your transfer from IB to ESA, but even this is unlikely as the DWP are working off lists of claimants to ensure everybody is transferred.
Hope this helps
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems