Sakin-
As a test before the launch, we moved our (local) site to a public domain. And, while most items worked correctly, some did not, e.g. featured sliders, our logo, and posted images.
While I could change the featured sliders’ URL, we could not get our logo and posted images to appear as they still referenced the old domain even though the image URL’s were correct.
Then we did the ‘search-and-replace’ you recommended. Now everything works correctly!
Thanks for saving us hours of lost time.