How to install a specific package with dependencies using apt-offline command?

I have installed apt-offline on two machines runing debian jessie, pc1 (online) and pc2 (offline). I am using the following command: sudo apt-key exportall | sudo gpg --no-default-keyring --import --keyring /etc/apt/trusted.gpg to fix missing key and successfully update pc2. The problem is that the signature file can not be generated for some package like dkms. I am using the following command to get the signature file: apt-offline set debian-install.sig --install-packages dkms Is it possible to install a specific package like dkms and linux-headers on pc2 using the command apt-offline?