https://community.cisco.com/t5/network-security/fmc-vs-fdm-63/m-p/3775672#M132609 Hi,<BR /><BR />This isn't possible. When you initially setup the device, you need to<BR />select local or central management. If you choose local management and<BR />after some time changed to central management, the configuration will be<BR />remove and you need to configure the device again. Only management<BR />configuration is retained for the device to be reachable from FMC.<BR /> Wed, 09 Jan 2019 04:23:13 GMT Mohammed al Baqari 2019-01-09T04:23:13Z https://community.cisco.com/t5/network-security/fmc-vs-fdm-63/m-p/3775667#M132608 <P>I know there is some improvement in FDM in terms of functions and API support. Could you please share some info on the differences between FDM vs FMC in 6.3 ?&nbsp;</P><P>&nbsp;</P><P>What will if I configure the interfaces and modes in FDM and want to register with the FMC later. can it take without resetting the configuration?&nbsp;</P> Tue, 12 Mar 2019 11:18:48 GMT https://community.cisco.com/t5/network-security/fmc-vs-fdm-63/m-p/3775667#M132608 rkrish708@gmail.com 2019-03-12T11:18:48Z https://community.cisco.com/t5/network-security/fmc-vs-fdm-63/m-p/3775672#M132609 Hi,<BR /><BR />This isn't possible. When you initially setup the device, you need to<BR />select local or central management. If you choose local management and<BR />after some time changed to central management, the configuration will be<BR />remove and you need to configure the device again. Only management<BR />configuration is retained for the device to be reachable from FMC.<BR /> Wed, 09 Jan 2019 04:23:13 GMT https://community.cisco.com/t5/network-security/fmc-vs-fdm-63/m-p/3775672#M132609 Mohammed al Baqari 2019-01-09T04:23:13Z