This is an interim issue to enable the automatic 'replace node' feature to be disabled. On large sites it is inevitable that during commisioning some nodes may be off line, with the automatic 'replace node' feature enabled this causes the registration process to re-allocate their addresses to new nodes. This causes considerable confusion and makes existing Doorway pages unusable.
The 'replace node' feature can be switched off by setting Switch 6 (W6 or C43) to OFF