FreePBX GUI upgraded but Distro is outdated

I have FreePBX installed from Distro (3.211.63 version). I upgraded GUI from 2.11 to 12 with www tool.
Now to upgrade it to 13 I need Asterisk 11 so probably I need to upgrade my Distro to newest but I don’t know is it safe to perform upgrade Distro to 4.211.64 (first step) with GUI 2.11 when I have actually 12.

Can you please help me?