How to config cn470_0 frequency plan?

my devices are working on 470.3,470.5,470.7 …Mhz, so the region should be cn470_0.
I added cn470_0 to the region IDs:

and then I config the device profile with “cn470_0”
but the region showen in the gateway page is still cn470_10

and on the gateway page , the dataframe can be seen
but on the device page ,no dataframe.
If I changed the region to CN470_10, the device page shows the dataframe.
what’s wrong? how to config cn470_0 frequecy plan ?