Firewall address range address book objects appearing as address sets with individual objects mem0,1,2 etc

Hi,

Quite new to Junos and the SRX platform so this may be "normal" behaviour but we noted that IP address range objects seem to be represented as individual objects within an address set, we hadn't noticed this before and after some searching we think this is supposed to be temporary objects created and then deleted.

Example

Range object  "device-10.1.1.101-103" will have an address set of the same name containing objects

"device-10.1.1.101-103-mem0" & "device-10.1.1.101-103-mem1" these objects will have subnets of /32 & /31.

May be normal and expected but we hadn't noticed this before so slighlty concerned.

Thanks

John