"Lost in Time"
Legion Oval 1997-07. Continued from Legionnaires #46 and continues in Legion of Super-Heroes (1989) #91.
Dragonmage attempts to warn the Legion of a new threat. The Legion of Super-Heroes gets reunited with its time-displaced members, however they are now all stuck in the timestream.
Note: The cover of this issue and Legion of Super-Heroes (1989) #91 combine to create a single image of the Legion. This issue is the right side of that image.