So, you are running multiple Sitecore instances on your local machine and each one with their own license file. And when your license has expired you need to replace all those local licenses.
Try including a small config include file in your App_Config\Include folder which sets the data folder. Just point the location of the license file to a central folder on your machine like this:
<configuration xmlns:patch="http://www.sitecore.net/xmlconfig/"> <sitecore> <settings> <setting name="LicenseFile"> <patch:attribute name="value">C:\\SC-Repository\\License\\license.xml</patch:attribute> </setting> </settings> </sitecore> </configuration>
Now when you need to update your license you can simply do it by replacing just one file and all your instances are updated.