The immediate consequence is an exit deadline for balances that still sit on Abstract. The migration interface asks users to connect the wallet holding those funds. It also lists Stargate, Relay and Jumper alongside the native bridge as alternative routes.
Those routes have different mechanics. Abstract's bridge documentation says its native bridge supports ETH and ERC-20 tokens between Abstract and Ethereum. It charges no bridge fee apart from gas costs. Withdrawals from Abstract back to Ethereum can take up to 24 hours because of a built-in delay; the shorter, roughly 15-minute deposit time applies to traffic going in the opposite direction.
Third-party bridges can offer faster or cheaper routes, according to the same documentation, but carry different security risks. The migration page's list of alternatives therefore does not establish that every token or position has an identical exit path.
An application deposit also differs from a token already held in a wallet. DeFiprime's October 7 reporting explains that users may need to withdraw from an application before an asset becomes available to bridge. Connecting a wallet to the migration interface is not, by itself, confirmation that every application position has moved.
The official notice does not publish a recovery process for assets left behind or a detailed timetable for individual network services to stop. December 15 is the stated chain-shutdown milestone. The project's request to migrate early, together with the native withdrawal delay, makes the completed destination transfer the relevant operational result.