Retention Policy for Acceleo builds
Code in CVS
Any code that was built and included in a Release is left in CVS forever. The CVS history allows for the retrieval of the code for each specific version, each tagged with a convenience tag such as "maintenance_R3_0".
Distributions in zip files
Formal releases are kept forever, but only the most recent release is kept on the main download page. Other, older distributions can be found on the archives site.
While developing a new release, milestone builds are kept until the release, at which point they are deleted.
Similarly, while developing a milestone, integration builds are kept until the milestone is available, and then are deleted.