Original sentence: Discredited 1970-style CPPA was a form of inflation accounting which tried unsuccessfully - by updating all non-monetary items (variable as well as constant real value non-monetary items) equally by means of the Consumer Price Index during high inflation - to allow for the effect of inflation in an attempt to make corporate accounts more informative when comparing current transactions with previous transactions
Edited sentence: Discredited 1970-style CPPA was a form of inflation accounting which tried unsuccessfully - by updating all non-monetary items (variable as well as constant real value non-monetary items) equally by means of the Consumer Price Index during high inflation - to allow for the effect of the stable measuring unit assumption in an attempt to make corporate accounts more informative when comparing current transactions with previous transactions