this is quite common that you use the same process multiple times in your product system, you can "leave" the inputs where they are, i.e. in two (or if you check, more) processes, the calculation will take care of this.
You see this also for the product system:
Market for electricity, medium voltage, AU is used 1446 times in the product system, e.g..
You should not remove the diesel and add it to the banana production since this will change your supply chain results; the overall result will be the same, but the contribution in supply chains will obviously change.