If you are moving to NetSuite's OneWorld account, you will need to add your subsidiary information to CloudExtend Setup in order for CloudExtend to work smoothly with your OneWorld settings.
To do this, click on Custom->Setup->Celigo CloudExtend Setup. You will only need to make changes under Step 2 of the whole setup module. Ignore Step 1 by clicking on Next. In Step 2, you will need to select the subsidiary of your account under 'OneWorld Settings' and click on Next. Click Next on Step 3 without making any changes and click on Finish on Step 4.