RNR Express in 1988

Watching Clash of the champions Miami Mayhem and they have a segment welcoming back the rock n roll express. Yet I don't remember them doing anything of note in the nwa that year. So, is there a story behind this?

If it's the time period I'm thinking of, they jumped to the AWA for a little while and bounced around between there and Memphis.  The appeal was really dead in the water by late 88 because it was really a short shelf life on the teen idol thing.  They didn't really pop up again until 1990 and by that time the act was pretty much done thanks to Gibson's pretty gnarly knee injury and the Steiner Brothers becoming the team everyone wanted.