Once a tool has been released we need to keep it's pisexml file in this directory, even if we take the tool out of the registry. A file called tools.properties, under cipres-portal, is generated from the pisexml files. It has ToolLabel_CL, ToolType_CL, ToolInput_CL, etc. properties for each tool in the pisexml directory. If a user has an old job, that used a tool that's no longer in the registry, the job and it's input file won't be displayed correctly in the task list unless these properties are present in tools.properties.