index override on HF data

Hi, There is situation where we have installed DB connect on HF and then the HF sends that data to 2 sets of different indexers and now we need to override the index name at one set of indexers . We have tried to override the index which is coming from UF is working fine. When we tried to override the index which is coming from HF (DB Connect), it was not working may be due to the metadata already set by this HF. Can you help me to fix this issue? Regards, Thippesh