Conversation so far:
What kind of personnel changes were happening?
Motown struggled to find good material for many of their acts after the exit of Motown contributor and Reeves' mentor William "Mickey" Stevenson.
Did they still have any hit music?
"Love Bug Leave My Heart Alone" (US #25; R&B #14) and "Honey Chile" (US #11; UK #30; R&B #5.
What else happened in their career?
That same year, label changes had started to take effect.
What label changes?
CANNOTANSWER.
What other changes were occurring?
However it was the infighting among the members of the Vandellas that led to their problems.
What problems were happening?
Kelley was the first to be let go after reportedly missing shows, as well as getting into altercations with Reeves.
Did they have any other internal struggles going on?
the group's name was officially changed to Martha Reeves and the Vandellas, to conform with the company's recent changes.
Did the Vandellas have any hits?
"(We've Got) Honey Love", "Sweet Darlin'" and "Taking My Love and Leaving Me" were issued as singles with diminishing success.
Is there anything else interesting?
In the summer of 1968, the group joined The Supremes, The Temptations, The Four Tops and Marvin Gaye in performing.

Question: Where were they performing?
Self-contained rewrite: Where were the Vandellas performing with The Supremes, The Temptations, The Four Tops and Marvin Gaye?