Recording against Excel 2010 with PowerPivot plugin using LR 12.53?

Has anyone managed to successfully record against an Excel app that uses PowerPivot plugin for reporting purposes?

I have tried ticking 'Use protected application recording' but still having no luck.

The only protocol that records anything is Winsock but it is practically useless in terms of correlation, parameterisation!

Replay fails with "Connection reset by peer" early in the replay.

Using Wireshark, it l;ooks like communicaiton uses SMB2 and TCP/IP however digging into my Winsock script does seem to mention SOAP calls? (Webservices picks nothing up).

Some protocols like Webservices appear to show transaction count increasing during recording but result in an empty script.

Anybody had anything similar?

Cheers,
Steven