When transferring a Lifetime ISA (LISA), your government bonuses and interest are protected and will move to your new provider automatically.
For Government Bonuses
You will not lose your bonus during a transfer.
If a bonus is earned but not yet paid, the old provider will forward it to the new one once received, or the new provider will claim it on your behalf.
Bonuses are claimed monthly (based on contributions from the 6th to the 5th). While the transfer itself takes up to 30 days, "residual" bonus payments may follow shortly after.
For Accrued Interest
Interest is calculated daily on your full balance (deposits + bonuses). Interest is typically credited monthly. All interest earned up to the transfer date will be moved to the new provider.