The Strontium Dog is Judge Dredd's future topic

[Funt Solo]

There was that terrible one where Dredd is The Terminator going to our near future to stop space bugs hatching in his present...

The Exterminator (919-927)

... not to forget (or perhaps we should ...) the one from the hotdog run where Dredd and the cadets get dumped in a whirlpool back to the day of the war ....

Roughly the same time IIRC.

Fog on the Eerie (1037-1040)

[Funt Solo]

And, again, this has been shown not to be how time travel works in the Dredd universe, repeatedly.

To illustrate: City of the Damned never happened. Dredd returned from the future and eliminated the threat before it could occur. At the point where he took out Owen Krysler, the timeline diverged and City of the Damned ceased to be the future of Dredd's timeline.

However, when Dredd and Anderson jumped back to 'present day' MC-1 from the future, the timelines had not yet diverged, which is why Dredd still needed replacement eyes, and there's a zombie Joe in the Black Museum.

And then we got that weird sort of "time storm" event thing: the 24-page single-shot In The Year 2120, from prog 1077.

[The Legendary Shark]

If one imagines the timeline as being like a plucked guitar string, with its length representing space and its width the arrow of time, then past, present, and future become fuzzy. Therefore traveling back in time doesn't necessarily impact the future because neither one is fixed.

[Southstreeter]

There was that terrible one where Dredd is The Terminator going to our near future to stop space bugs hatching in his present...

I rather liked that one. Terrific Burns art.

[Richard]

I like Shark's idea!