I gave QB online a try about a year ago and for various reasons gave up and continued with Desktop (Premier 2018 at this point). However, I kept my subscription going, so I've been paying the monthly fee since then, even though I haven't used it.

I'd now like to try again and see if I have more success this time. I've got started by doing an export from Desktop Premier 2018, up to my QB Online account. My expectation was that it would simply overwrite the existing (and now *very* out of date) old data, with the new data. However, it appears to have created an entirely new company, and has done that under a second QB Online account (remember, I already have one). And that second account appears to be a 30 day trial.

Can anyone tell me how to do what I'm attempting -- namely, completely ditch the old data and start using newly imported up to date data? 

FWIW, while browsing around looking for info on this, I did notice this ominous message at this Intuit web page which I got to from this one:

• You can only import QuickBooks Desktop data within the first 60 days of your QuickBooks Online company start date. Your QuickBooks Desktop file will also replace your entire QuickBooks Online file and overwrite any existing information.

I can't see why that first sentence should be true, but if it is then does it mean I need to cancel my entire QuickBooks online subscription and then immediately start it again, just so I can trash my old data?

thanks.