Yes, in The Graph protocol, you need to undelegate your GRT tokens from your current indexer before switching to a new one. The undelegation process typically involves a cooling-off period during which your tokens will be locked and cannot be staked with another indexer. Once the cooling-off period is over, you can then delegate your tokens to the new indexer.

To summarize:

1. Undelegate from Current Indexer: Initiate the undelegation process.
2. Cooldown Period: Wait for any required cooldown period.
3. Delegate to New Indexer: After the cooldown period, you can delegate your tokens to your chosen new indexer.

Make sure to check the specifics of the undelegation and delegation process in The Graph’s documentation, as the policies and timeline may vary.

When switching to a different indexer on The Graph network, undelegation is not required before switching. Here’s how it works:

1. Delegating to a New Indexer: You can directly delegate to a new indexer without having to undelegate your current one first. The process of delegation is flexible, and you can move your delegation between indexers at any time.

2. Partial vs. Full Delegation: You have the option to:

   • Switch all your delegation to the new indexer, which would effectively stop delegating to the old indexer.
   • Split your delegation between multiple indexers, maintaining some of your stake with the old indexer while also supporting the new one.

3. Undelegation Period: If you do decide to undelegate from your current indexer (which you can do at any time), there is an undelegation period of 24 hours. During this period, your stake is not actively earning rewards, but it will not be locked or lost.

In summary, you do not need to undelegate from your current indexer before switching. You can delegate directly to a new indexer, and the previous delegation will continue until you decide to fully undelegate.

Let me know if you need further clarification!