I've never heard of trailing profit.
A trailing stop trails price and that makes sense.
I can only imagine that it means with a 20 pip trailing profit.....
Reach 100 pips profit so that is trail point and so place TP at 120 pips
profit drops to 80 so TP is moved 20 pips down to 100 pips.
I do like using a trailing stop.
Trailing profit yes, but normally just to make sure of a break even trade and then do it manually.