Hello, I have a CSV in which I am attempting to shorten a 128 character string down to the last 8 characters. I used the following configuration in transforms/props: props.conf: [taxi_csv] DATETIME_CONFIG = INDEXED_EXTRACTIONS = csv KV_MODE = none NO_BINARY_CHECK = true SHOULD_LINEMERGE = false category = Structured disabled = false pulldown_type = true description = Comma-separated value format. Set header and other settings in "D$ TIMESTAMP_FIELDS = Trip Start Timestamp TZ = America/Chicago TRANSFORM-mask = taxiMask transforms.conf: [taxiMask] REGEX = (\w{120})(\w{8}) FORMAT = "Taxi ID"::$2 WRITE_META = true SOURCE_KEY = field:"Taxi ID" DEST_KEY = _raw However, the resulting indexed data contains both the original string and the shortened string as two separate values in the same field. What configuration change can I make to replace the original value with the shortened string? Thanks! ... View more