Changed extended data definitions, no data now shown

I have recently added a battery to my solar system and changed the uploader from a raspberry pi running a ‘c’ application to home assistant. The changes mean I now want to display different variables in my extended data. V7 -V12 are refusing to display and I am fairly confident I have the upload data correct as all other parameters are fine. Is it possible that the old data in V7-V12 which contains different parameters is causing this problem? Any suggestions for debugging would be much appreciated.