Transit through Jebel Ali never becomes an import, so the file follows the declaration, not the consignee. Someone local with a customs code lodges it and posts a guarantee that comes back only against an exit endorsement. Kampala holds nothing.
What I have watched go wrong is the endorsement never returning from the far frontier: box long gone, guarantee still open, the agent the one asked. I cannot tell you how Kenya reads it.
Your failure mode is my ordinary week. The seal goes on at the port, only the officer at the far border can take it off, and the bond sits open until that comes back down the line. I have chased discharges on boxes unloaded months earlier.
If the file follows the declarant here too, the declarant is me: five years of paper for goods I never imported, kept for a consignee in another country who has no reason to return my calls. Nobody at our counter has said so. Nobody has said otherwise.
On my corridor the guarantee sits in the haulier's name, not the agent's. The driver carries a reference and a seal, and proves nothing. The demand comes long after the job was invoiced, and it finds the guarantee, not the consignee.