Understanding Society User Support

Dear Support Team,
In my current research project, I am focussing on benefit recipients. More specifically, I would like to compare different claimant types of Jobseeker's Allowance or Employment and Support Allowance, depending on whether they claim the income-based version of these benefits or the contribution-based / "new-style" version. Is there any way to tell the two claimant types apart in the data? I came across a previous ticket (#1187) that seems related. Unfortunately, I found myself unable to differentiate between income-based and contribution-based claims using the suggested solution. The reason being, that in the income.dta files, I could identify only one value of fi_code relating to each benefit. For my purposes, however, I would expect to require two values each, or, alternatively an additional binary variable depicting whether or not a given claim was contribution-based (income-based). Any more pointers would be greatly appreciated!
Many thanks,
Lucas