@GvB 

when you adopt the router to Omada, all settings on the router will be deleted, it is not possible to migrate settings from stand alone to Omada SDN. BUT, you can pre-configure the Omada SDN controller before you adopt that way you will have the least possible downtime.

  @MR.S and @Virgo:

At this moment the  router is pending, as it is for a long time because I am hesitating to migrate.  

But i see the right LAN, client list (mac/ip bonding) and SSID are in the Omada Cloud environment for a long time.

Will this information be gone after adapting the router? 

I just want to understand the principle. There are not a lot of settings to be lost but I can imagine more people want to migrate an existing TL-R605 into the Omada Cloud and hesitate to do this because of the question: 'what will be lost?'. 

  @MR.S Ok, thanks for the explanation!