editing properties using selections 2

I want to edit the conductivity in an area where the specific storage is =0.01.

I select that area - while the specific storage acvtivated - and store it in the panel Selections. Then I activate the conductivity, click the selection stored in panel Selection and do the edition.

In the end I get the area edited with the values I wish for conductivity BUT... all the other model properties and variables are also edited, which is something I didn't asked for.

In fact, if I had 4 values for specific storage along the model I now have only 2 areas with values 0 and 1. The same goes for the other properties.

How can I edit the conductivity using this selection WITHOUT changing the other properties? Or is this behaviour clearly a bug?

As answered before, if it was like that it would be clearly a bug. I would recommend, however,  to once again cross-check exactly your steps, as such a severe bug very probably would have been noticed very quickly by many users.