User called 'system' is creating import rules that are wrong

I have just got Yodlee working for the first time in ages and catching up with explaining invoices.

At first I thought the rules tool was great.

Now I keep being told that invoices have already used rules.

But I haven't created them. In the rules list, they keep being generated by the 'system'. And they are all completely useless. Things like "If description contains the word 'bill payment' it must be the supplier called CPC". The 3 rules I have deliberately chosen seem fine, they are marked as 'user'.

Why is the system making up these rules as I'm doing my explaining? Can it be turned off please?