Handling configurations in source integrated access backhaul (IAB) donor during temporary topology adaptations

A method for a target donor centralized unit (CU) in an integrated access backhaul (IAB) wireless network, the method comprising:

• receiving, from a source donor CU in the wireless network, an indication that traffic between the source donor CU and a top-level IAB node in the wireless network needs to be offloaded to the target donor CU;
• migrating one or more descendant nodes of the source donor CU to the target donor CU such that the target donor CU handles the offloaded traffic;
• receiving, from the source donor CU, an indication that the offloading is revoked;
• and
• based on the indication that the offloading is revoked, migrating the one or more descendant nodes from the target donor CU to the source donor CU such that the source donor CU handles the traffic for which offloading was revoked.

A method for an integrated access backhaul (IAB) node in a wireless network, the method comprising:

• receiving, from a source donor centralized unit (CU) in the wireless network, a first indication that at least one configuration for traffic between the source donor CU and at least one IAB node is suspended, in association with migration of a top-level IAB node from the source donor CU to a target donor CU in the wireless network, wherein the IAB node is a descendant node or an ancestor node of the top-level IAB node;
• suspending the at least one configuration in accordance with the first indication;
• receiving, from the source donor CU, a second indication that that the at least one suspended configuration is reactivated;
• and
• reactivating the at least one suspended configuration in accordance with the second indication.