Prior to AJDT 1.1.11 build configurations were stored in a different format in .lst files. The command line AspectJ compiler and other IDEs still use .lst files so AJDT provides support for converting between .lst and .ajproperties files.
To convert a .lst file to a .ajproperties file, right click on the file in the package explorer then select AspectJ Tools > Save as .ajproperties file.... In the resulting dialog optionally change the name of the file to be created, then click OK to complete.
To convert a .ajproperties file to a .lst file, right click on the file in the package explorer then select AspectJ Tools > Save as .lst file.... In the resulting dialog optionally change the name of the file to be created, then click OK to complete.
AspectJ projects
Build configurations
Creating a new build configuration
Editing a build configuration
Switching build configurations
Using build configurations with Ant