Never heard of an 'anti-ice filter' as part of a fuel system - heat exchangers to cool oil with fuel or heat fuel with oil yes - just how would this 'anti-ice filter' work as part of the fuel system?
Its not that unusual, as leas not in chilly climates. Maybe the formal name might be different (like airframe fuel filter or something like that), but the ”go by name” is ice filter as the main purpose is to trap ice. We have them on the Swedish NH90 (not standard in all NH90 but a option) and we did have them on our AS332M1.
Probably a bit off topic in this case though, as it seems like its the Inlet Barrier Filter that is the issue here