removed preserve_id saftey check resolves #444
removed preserve_id saftey check resolves #444

jsnoble/teraslice,jsnoble/teraslice,terascope/teraslice,jsnoble/teraslice,godber/teraslice,terascope/teraslice,jsnoble/teraslice,terascope/teraslice,godber/teraslice,terascope/teraslice,godber/teraslice,jsnoble/teraslice