44# YB v3: swap LTMigrator (limit=1 fallback fix)

Register the new LTMigrator 0xE707c7a9dD58fb7eEa17acFF875CEF8d10eD1a9F as a limit setter on HybridFactoryOwner and disable the previously-registered LTMigrator 0xDfD6fe3A540F68601002E889E33117a7E8A0669D (Vote installed via https://yieldbasis.com/proposal/37). The previous build's lt_allocate_stablecoins(lt_from, 0) deallocation reverts ('Not disabled') after a HybridVault withdrawal flips disabled_lts back to False on a deprecated LT, trapping users mid-migration. The new build branches on disabled_lts and falls back to limit=1 in that case, leaving lt_from at the sentinel allocation=1 so migrate-back is refused.