Copying entire WordPress installations back and forth over and over again without paying attention to your wp_config.php file is not a very smart thing to do.
You also should pay attention to whether or not you are copying’n'pasting or cut’n'pasting. The latter results in the disappearance of the original.

Today, I accidentally deleted the CodingExperiments WordPress installation via cut’n'paste. I pasted the entire installation over to one of my other sites, which I mentioned in the previous post that I was putting WordPress onto another site.

I simply copied the installation back to fix the problem. However, both installations share the same database by having different database table prefixes. When copying from CodingExperiments to my other site, I was careful about the wp-config.php file. When copying back from the other site to CodingExperiments, I wasn’t so attentive.

The result was that CodingExperiments was temporarily redirected to the other site. It took a little help with Voyagerfan5761 to find the problem and then fix it.

At least the damage wasn’t permanent.