with the earlier enhancement concept, it was necessary to modify the SAP standard BSP application. This resulted in the loss of your customer extensions during an upgrade of software component SAPTMUI. Thus, we had to change the existing concept to keep your extensions in the future:
2244451 – Collaboration Portal: Customer extensions get lost in upgrade
This SAP Note changes the enhancement concept in an incompatible way. It would be good that you implement this note and adapt your extensions to the new concept before the next version of component SAPTMUI is installed. The extension guide provides step-by-step-descriptions. Currently, the new version is only attached to the note but will soon be published at the link location that is known to you. As usual I will post the update here.
Thanks for your understanding!