My Custom SharePoint Managed Property is not showing any values when I add it in the design template. The property has values for sure as I did check it using a custom WebPart that ) created using C#.
What things could I check?
Have you used property sync.
Go to Site settings --> Search Result Types. Notice that a Property Sync alert is displayed.
I tried most of the steps in all the blogs and finally consolidated the steps that actually worked for me. Follow this for resolution
Update: Adding the solution here
Perform a search now and see if the new MP is coming up. If still they are not showing up, use the Search SearchQueryToolv2.6 to query and find if the Search API is throwing them up. If all seems fine then do below
Final nail in the coffin would be restarting the SP Timer and SP Administration services. (This step made my changes reflect. Though for others, it worked at step 5)