But when Perl and or JSON::XS is loading the JSON file, it seems to be reinterpreting the $t some how as the current time.

Sorry, but almost certainly not.

use warnings;
use strict;
use Data::Dump;
use JSON::XS;

dd decode_json('{ "updated":{ "$t":"2019-07-19T20:04:56.046Z" } }')

__END__

{ updated => { "\$t" => "2019-07-19T20:04:56.046Z" } }

[download]

Again, please provide a Short, Self-Contained, Correct Example that we can run that shows otherwise.

In reply to Re^3: Escape $ in JSON::XS decoded by haukex
in thread Escape $ in JSON::XS decoded by johnfl68

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