Don't delete when source offline

[georg_m]

I have a backup that mirrors data from drives D and E to drive F.
D: -> F:\D
E: -> F:\E

This automatically starts (via Autorunner) when drive F is mounted and works fine when A and B are online.

However if D is online and E is offline, the Data F:\D is created as it should, but all content of F:\E is deleted.
So the logic seems to be:
If source cannot be found, everything in corresponding target is deleted
(as if source was empty)

What I would need is the following behaviour:
If source cannot be found nothing in corresponding target is changed

Is this possible via some setting?

[Zenju]

That's already the current behavior. Also note: viewtopic.php?t=7114

[georg_m]

Hi Zenju

It is not possible to select "do nothing, if item exists only on the right side", when "detect moved files" is enabled/ticked. That was the problem in my case.
So I have to decide between the two functionalities.

Thank you

[georg_m]

...and of course it would be great if the two weren't mutually exclusive (if that's technically possible).
I move files AND have some sources offline sometimes.

[xCSxXenon]

I can select 'do nothing' for items only on right side with detection on. But, what you want is to use the 'update' sync method instead

[georg_m]

Thank you, but here the moved-file-detection-option is greyed out as soon as i select anything else than "delete" for items that exist only on the right.
(And no, update is not what I want, because in case of conflict I would like to update the right element.)