What is the core approach for deleting a single log entry from an EVTX file as described in this article?

The core approach involves modifying the log length to merge the target log entry with its preceding log entry, thereby effectively removing it. This technique is detailed in Windows XML Event Log (EVTX) Single Log Deletion (Part 2) – Program Implementation for Deleting Single Log Records in EVTX Files and requires updating the file header's next record identifier, recalculating CRC checksums, adjusting event record identifiers of subsequent logs, and modifying ElfChunk metadata.