When scale dynamic component, the dynamic component lose some attributes

before scale dynamic component. the attributes are below

["_copies_formula", "group209!LenX/group209!group208_s"]
["_copies_label", "Copies"]
["_formatversion", 1.0]
["_has_movetool_behaviors", 1.0]
["_hasbehaviors", 1.0]
["_inst___iscollapsed_access", nil]
["_inst___iscollapsed_formlabel", nil]
["_inst___iscollapsed_formula", nil]
["_inst___iscollapsed_formulaunits", nil]
["_inst___iscollapsed_label", nil]
["_inst___iscollapsed_options", nil]
["_inst___iscollapsed_units", nil]
["_inst__copies_access", nil]
["_inst__copies_formlabel", nil]
["_inst__copies_formula", "group209!LenX/group209!group208_s"]
["_inst__copies_formulaunits", nil]
["_inst__copies_label", "Copies"]
["_inst__copies_options", nil]
["_inst__copies_units", nil]
["_inst__copy_access", nil]
["_inst__copy_formlabel", nil]
["_inst__copy_formula", nil]
["_inst__copy_formulaunits", nil]
["_inst__copy_label", nil]
["_inst__copy_options", nil]
["_inst__copy_units", nil]
["_inst__iscollapsed", "false"]
["_inst__x_access", nil]
["_inst__x_formlabel", nil]
["_inst__x_formula", "0.0+copy*group209!group208_s"]
["_inst__x_formulaunits", nil]
["_inst__x_label", "X"]
["_inst__x_options", nil]
["_inst__x_units", nil]
["_inst__y_access", nil]
["_inst__y_formlabel", nil]
["_inst__y_formula", "0.0"]
["_inst__y_formulaunits", nil]
["_inst__y_label", "Y"]
["_inst__y_options", nil]
["_inst__y_units", nil]
["_inst__z_access", nil]
["_inst__z_formlabel", nil]
["_inst__z_formula", "0.0"]
["_inst__z_formulaunits", nil]
["_inst__z_label", "Z"]
["_inst__z_options", nil]
["_inst__z_units", nil]
["_inst_copies", 0.6808510638297747]
["_inst_copy", 6.0]
["_inst_x", 0.0]
["_inst_y", 0.0]
["_inst_z", 0.0]
["_lastmodified", "2017-10-03 21:54"]
["_lengthunits", "CENTIMETERS"]
["_lenx_error", "15.999999999999705"]
["_lenx_formula", "15.999999999999705"]
["_lenx_label", "LenX"]
["_lenx_nominal", 6.299212598425081]
["_leny_error", "15.999999999998543"]
["_leny_formula", "15.999999999998543"]
["_leny_label", "LenY"]
["_leny_nominal", 6.299212598424623]
["_lenz_error", "71.99999999999991"]
["_lenz_formula", "71.99999999999991"]
["_lenz_label", "LenZ"]
["_lenz_nominal", 28.34645669291335]
["_name", "group208"]
["_x_formula", "0.0+copy*group209!group208_s"]
["_x_label", "X"]
["_y_formula", "0.0"]
["_y_label", "Y"]
["_z_formula", "0.0"]
["_z_label", "Z"]
["lenx", 6.299212598425081]
["leny", 6.299212598424623]
["lenz", 28.346456692913353]

after scale the dynamic component, the attributes are changed. the attributes are below:

["_formatversion", 1.0]
["_has_movetool_behaviors", 1.0]
["_hasbehaviors", 1.0]
["_inst___iscollapsed_access", nil]
["_inst___iscollapsed_formlabel", nil]
["_inst___iscollapsed_formula", nil]
["_inst___iscollapsed_formulaunits", nil]
["_inst___iscollapsed_label", nil]
["_inst___iscollapsed_options", nil]
["_inst___iscollapsed_units", nil]
["_inst__copies_access", nil]
["_inst__copies_formlabel", nil]
["_inst__copies_formula", nil]
["_inst__copies_formulaunits", nil]
["_inst__copies_label", nil]
["_inst__copies_options", nil]
["_inst__copies_units", nil]
["_inst__copy_access", nil]
["_inst__copy_formlabel", nil]
["_inst__copy_formula", nil]
["_inst__copy_formulaunits", nil]
["_inst__copy_label", nil]
["_inst__copy_options", nil]
["_inst__copy_units", nil]
["_inst__iscollapsed", "false"]
["_inst__x_access", nil]
["_inst__x_formlabel", nil]
["_inst__x_formula", nil]
["_inst__x_formulaunits", nil]
["_inst__x_label", nil]
["_inst__x_options", nil]
["_inst__x_units", nil]
["_inst__y_access", nil]
["_inst__y_formlabel", nil]
["_inst__y_formula", nil]
["_inst__y_formulaunits", nil]
["_inst__y_label", nil]
["_inst__y_options", nil]
["_inst__y_units", nil]
["_inst__z_access", nil]
["_inst__z_formlabel", nil]
["_inst__z_formula", nil]
["_inst__z_formulaunits", nil]
["_inst__z_label", nil]
["_inst__z_options", nil]
["_inst__z_units", nil]
["_inst_copies", 11.479148936169999]
["_inst_copy", 11.0]
["_inst_x", 0.0]
["_inst_y", 0.0]
["_inst_z", 0.0]
["_lastmodified", "2017-10-03 21:54"]
["_lengthunits", "CENTIMETERS"]
["_lenx_error", "15.999999999999705"]
["_lenx_formula", "15.999999999999705"]
["_lenx_label", "LenX"]
["_lenx_nominal", 6.299212598425081]
["_leny_error", "15.999999999998543"]
["_leny_formula", "15.999999999998543"]
["_leny_label", "LenY"]
["_leny_nominal", 6.299212598424623]
["_lenz_error", "71.99999999999991"]
["_lenz_formula", "71.99999999999991"]
["_lenz_label", "LenZ"]
["_lenz_nominal", 28.34645669291335]
["_name", "group208"]
["lenx", 6.299212598425081]
["leny", 6.299212598424623]
["lenz", 28.346456692913353]

why after i scale the dynamic component, does the formula attributes lose???

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