I tried a few ways that are common and basic but did not work. I created the file in the last 2 weeks.
If you created the file using | outputcsv
then you can do this:
|history | regex search="outputcsv" | table search
Be sure to set your timepicker to cover the dates when you ran the original search (i.e. Last 2 weeks
in your case).
I use this trick ALL THE TIME.
What do you mean "saved in a dashboard"?
Are you talking about data that you brought into Splunk? Are you talking about a dashboard or report that you created?
Please give more details about what you have already tried.