Hi, the older versions of xtool and the current version have different code infrastructure and porting the deduplication code would be time consuming, also a standalone deduplication program wouldn't make sense simply because the xtool version is stream based meaning, it relies on whatever streams are detected, however if you just wanted deduplication in stdio mode, you can just use srep in -m0 mode rather than -m#f, not sure if that answers your request