Hello

Still having some doubts and issues about Electrum and need some help.
Firstly, I am in the process of updating my 3.0.2 (portable) version (where I have some btc)  to the 3.0.5 on Window 10.  However, not really sure about what I have just done.
I've installed version 3.0.5 to a new folder on my off-line pc. Created a standard wallet_1 (same name as the one on former installation) and restored it from seed. Then, I've overwritten C:\Users\E8-950\Desktop\electrum_data\wallets\wallet_1  to the same path of the new 3.0.5
As regards the on-line pc, I've upgraded to version 3.0.5 as well and created the watch-only installation restoring from PMK.  Last, I've overwritten wallet_1 to proper path.
When I open my new Electrum 3.0.5 installation I can see my history transaction although they are marked 'Not Verified'
My questions are:
As concerns upgrading Have I done the right thing?
Why  the new installation is showing 'Not verified' transactions ? What do I have to do next ?

The last question (not necessarily correlated to the above but of some interest to me):  Having to do the Electrum upgrade would it be possible to install the Installer version instead of the Portable one  and have my btc transferred  from one version to the other ? If yes , how can I manage this?

I hope I am not posting too many questions. I have made my efforts to find answers through searching and reading but still not at ease with the matter.

Many thanks