Search for information about it in the forums but found nothing concrete about it:
None of the arrow imbues work for Wood elf racial enhancement line Arcane Archer if the character does not have at least one level of the actual Ranger class. I have extensively tested many combinations and if you pick other classes combinations without at least 1 level of ranger, then when you activate the imbues (absolutely essential for any bow ranged build that takes that racial subtree) nothing happens: no elemental damage arrows, no paralyzing arrows, nothing.
Informing just in case someone plans on TRing into Wood Elf to make use of its AA line without actual ranger levels.