I find bug trackers and source control fad change several times over the life of my code. A number from a ticket system we no longer use is not helpful.

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sokoloff 34 minutes ago | parent [-]

But a number from a ticket system you are using is helpful and vastly more log messages will be read during the time when it’s active than after it’s been retired/replaced.

	▲	bluGill 24 minutes ago \| parent [-]
		The switch was too recent in my case, I'm still seeing many numbers from the old system that I can't look up.