Open Dishonoredweapon.ini and replace the contents of

[DishonoredGameContent.DisDamageType_Arrow]m_bCanThrow=Truem_bCausesBleeding=Truem_bExplodesGrenades=Truem_bExplodesWhiskeyBottles=Truem_bForceThrowOnDeath=Truem_bPinLimb=Truem_bSeverLimbsUponDeath=Truem_bSlowDeathOnly=Falsem_bSpecifyHitReactImpulse=Falsem_ExpectedHitReaction=eDisPawnHitReactionType_Projectilem_fHitReactImpulse=100000.000000m_SeverLimbsUponDeathParams=(m_fChanceOfTriggering=0.3,m_fChanceOfDestroying=0.0,m_bIncludeNearestBone=False,m_bExcludeChestBone=True)

With the contents of

[DishonoredGameContent.DisDamageType_Arrow_Sleep]m_bCanThrow=Falsem_bCausesBleeding=Falsem_bDisableHitReaction=Falsem_bForceThrowOnDeath=Falsem_bInstaDeath_NonPlayerToNPC=Truem_bInstaDeath_PlayerToNPC=Truem_bInstantSleepForUnawareNPCs=Truem_bIsStealthDamage=Truem_bNoSmallHitReactOnNPC=Falsem_bPinLimb=Falsem_bPutToSleep=Truem_bSeverLimbsUponDeath=Falsem_bSlowDeathOnly=Truem_ExpectedHitReaction=eDisPawnHitReactionType_Weakm_fTimeBeforeSleep=1.500000

Congratulations all of your regular bolts will act like just sleep bolts but will still be retrievable and will still be eligible for the increased capacity upgrades.

The standard "Make a backup and don't blame me if this nukes your game." disclaimer applies