ant filtering - destroy ability set

i've got termite build.xml uses <copy> assign duplicate accumulation xml files. uses filtering combine properties build.properties file. any sourroundings (dev, stage, prod) opposite build.properties stores settlement environment.

sometimes supplement new properties open xml config files requires updating build.properties file.

i wish termite destroy quick there properties blank build.properties. is, any tender @...@ tokens generated files, i wish build die user knows need supplement some-more properties internal build.properties.

is illusory built tasks? i couldn't anything docs. i'm tradition termite task, nonetheless maybe i gangling myself effort.

thanks