Yes, perfect. It is there in the FCOM quote (which is itself coming from a section on how to calculate using 25+ RTOW charts):
- the certified limit is 25, and to make sure you observe it
- anytime in daily ops when CG shows less than 27, please use those corrections for less-than-25% CG.
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THE AFM note, on the other hand, tells you what is the way to obtain performance data directly and exactly for CG positions in front of 25%. If you did that and printed an RTOW chart with a forward CG setting, comparing to the normal RTOW values the difference would equal to 1000 kg / 2 deg FLEX in a conservative average.