The Ingres database has had a change in its logging system with patch level 14983: introducing the new REPLACE type (for Ingres Bug #130681).
This causes compatibility issues with older HVR versions. Versions before HVR 4.7.3/33 encounter error: F_JT0400: Log scanning error F_JZ2204. Unexpected Ingres record type 179 encountered while processing record with LSN [..]
Whereas HVR version 4.7.3/34 & /35 would silently ignore updates to source tables.
The is bug report HVR-1458 which was fixed in HVR 4.7.3/36
Please contact customer support if you encounter problems.