Strange CRM number sequences

[dreshkov_imported]

I have a strange problem with number sequences. I have 2 sequences defined - business account and relation account. At the begining they both points to 1 as next value.
After I have entered a business relation (correct numbrs are assigned 1st time) I entered a Quotation to this Business account
And after that, back in BusRel window I am tring to add new Relation - and the numbers are 2 for Business account and 5 (!) for account number (relation account)
Can someone explain me why?!
How cah I syncronize 2 sequences?!