We have another issue where the metadata needs to be updated to extend the column length of a field.
In this case it is the GivenName field of the Customer table. Skyvia creates this field in SQL Server as nvarchar(25).
In our QBO data, this field is the same as FullyQualifiedName (which Skyvia creates with 1000 char limit). It is a combination of project code and account codes in our data, and sometimes exceeds 25 char length.
Please let us know if you can extend the length of this field in your metadata. I would suggest extending the other name fields as well though we are not using them (MiddleName and FamilyName) - 25 characters is quite small.