Skill Dialog Bots and Update Activity

Hi,

In a dialog-root-bot and skill-dialog-bot implementation, if my skill-dialog-bot shows an adaptive card and the user has already acted on the presented card, I want to update the card with either a 'text' message or a card to avoid the user from interacting with the previous card again.

My dialog-root-bot's WaterfallDialog definition is as follows

.addDialog(new WaterfallDialog(WATERFALL_DIALOG, [
	this.actStep.bind(this),
	this.finalStep.bind(this)
]));

In finalStep, I check for the results from the skill-dialog-bot and determine if I need to update the activity and present the next card or message.  In the following snippet, I replace the previous card with a new card

const details = stepContext.result;
const conversationId = details.conversationId;
const activityId = details.activityId;

const nextCard = stepContext.context.activity;
nextCard.value = null;
nextCard.text = null;
nextCard.type = ActivityTypes.Message;
nextCard.conversation.id = conversationId;
nextCard.id = activityId;
nextCard.attachments = [details.nextCard];
await stepContext.context.updateActivity(nextCard);

What happens now is that even though the skill-dialog-bot has ended the conversation, the line "stepContext.context.updateActivity(nextCard)" will again pass control to the skill-dialog-bot.  

Is there a way to prevent that?

Thank You