I have upgraded from iphone 4S to 5S - now backup/restore didn't work fully

Question

I backed up my 4S via icloud and also via itunes [belt n braces] immediately prior to moving my sim to my new 5S.
However, having done a backup on 20th May at 14:00 ish [it did confirm at the time that it had done one], I then started the restore following the prompts, but when the list of available backups was shown, it only showed the previous two - one from 5 days ago, and one older than that.
I [stupidly, as it transpires] went for the more recent one [dated 5 days ago] thinking maybe it had not updated its timestamps, and I now have my calendar / reminders etc all fine up until 5 days ago.
I have now lost 5 days worth of updates and I have checked that it has indeed missed out the last 5 days. I have done a lot of work in that time so
what happened when the backup lied about finishing today's backup OK;
why did I only get the most recent backup showing as 5 days ago, and
how do I get the missing 5 days back?

Answer 1

I ended up going back to backing up the iphone 4S via itunes, then leaving that phone in the usb port.
I linked up the 5S via its usb port [why do they have to be different by the way - is this a ploy to get you to buy a new in-car charger all over again too?] and then restored the iphone 5S by selecting the backup from the 4S that I'd just done, and lo and behold! Problem solved.
It also helped that I renamed both devices to include the text '4S' and '5S' in their names, as prior to that , they were both called "...'s iphone", thus adding to the confusion over the backups and which to select.
It still doesn't solve the original problem of why I 'lost' a backup via iCloud, but I choose to ignore that as "I'm alright Jack" for now!