English to Czech Medical Medical: Health Care social care

for some time I have used the abreviation c/f to indicate that a speciffic task had not been compleated on a previous day had been caried forward to the next, i.e c/f from monday 21st/11/09 if this task is still not compleated by the 22nd I would still indicate within our diary that this task has been c/f from monday the 21st. this quickly indicates how many days this particuler task has been carried forward. or if the task is fairly mundane I would simpliy indicate that this task had been caried forwaqrd from the previous day with the use of C/f in my writen comunication with coulegues, a work coulegue has resently chalenged this and indicated that I should use b/f, brought forward, I have used this abreviation befor, but only to indicate that an appointment or activity has been briought forward from a future date for one reason or another. this seems logical to me, is this the right or wrong use of these is abreviations?