Looking for Reference and asking for Reassurance

[Mr & Mrs Hopkins]

Asking for Reassurance First;
I use VirtualBox on Windows 11, and this last week an update to KDE-Plasma (Tumbleweed) made the OS crash and become 
unusable.
I tried a 1/2 a dozen other KDE-Plasma distritbutions and had the same crash or it couldn't access files.  Even tried 
Hyper-V.

I had to go back to Linux Mint 22.1 on VirtualBox which has Tellico Version 3.5.3
I think I asked this before, but I would like to ask again.  Will I have any problems using an older version with the 
database.

Looking for References:
My husband has started to have book authors who are creating fractional stories in their series.

ex  0.5  The Prequel

I created a number field for the series number, but I don't know how to format or if I can for fractional numbers.
Is there a place I can look or is it not possible.


Thank you
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