This issue should now be resolved. If you continue to have trouble with the split tool, please proceed with submitting a support ticket.
The split activity tool is not currently functioning properly. You may be able to start the process of splitting your activity but you won't be able to save your changes. Our team is aware of the issue and working towards a resolution. We apologize for the inconvenience and appreciate your patience.
Please “follow” this known issue to receive email updates on the status of the problem.