Overall....check out this curated post of ideas and fixes for Lifetime Planner and vote your wants and needs.
So... Back to a possible workaround, albeit a bit of a slowdown...
For either issue, try using LTP's Special Expense (image) feature to model any one-time and recurring expenses related to your debt-reduction plan scenario. But, be sure to avoid any "double-dipping" of expenses when modelling this "special expense". That is, the expenses (or those additional expenses) related to your debt reduction plan are not modelled elsewhere and included in LTP, such as in living expenses or loans.
