Metric to Log Timestamp gets overwritten? How to preserve log timestamp when converting to metric and sending using prometheus remote write?

[generate-me12]

Hi, I'm trying to use log_to_metric transformation. These are logs have timestamps that aren't current such as 2025-03-24T18:53:01.419106546Z These are metrics that were converted to logs to be stored in an s3 bucket, I am then ingesting these logs from s3 and I converting them to metrics and then sending them to Amazon Prometheus using prometheus_remote_write.

This is how I'm converting the log to metrics:

convert_s3:
    type: log_to_metric
    inputs:
      - s3_metrics_as_logs
    metrics: []
    all_metrics: true

I notice when I notice that log_to_metric transform sets the metric timestamps to the current timestamp the metric is converted. I tried adding a remap after this to change the timestamp back using
.timestamp = parse_timestamp!(.tags.log_timestamp, "%Y-%m-%dT%H:%M:%S%.9fZ")
but I notice that when I use prometheus_remote_write to send to prometheus, the timestamp shows as the current timestamp.
Does both log_to_metric and prometheus_remote_write alter the timestamp?