(Exodus 12:34) "their remnants": of matzoh and maror. You say this, but perhaps (the reference is to) remnants of the Paschal lamb? (Ibid. 10) "And you shall not leave over anything of it (the Paschal lamb)" already accounts for the Paschal lamb. How, then, am I to understand "their remnants bound up in their clothes"? As referring to the remnants of matzoh and maror.
The Torah States That the Israelites Carried Their Remnants Wrapped in
Mekhilta Tractate Pischa 13:29