Many companies submit employee pension deductions to the National pension fund. In Kenya NSSF.
I assume EAA did the same with its employees, meaning Kenyan employees are owed pension by NSSF and Tanzanians by your own pension fund.
This protects employees in case the company goes under.
But still, in the unlikely situation that EAA was running a private pension fund, it still would have been unable to meet obligations, whether Kenya agreed 'to sit down' or not.
Money could not have been created from thin air. EAA was dead and its assets liquidated by creditors.
For the others, EA Railways, EA harbor etc. I would want a case by case breakdown of finances and what went down. Tanzania has a lot of misinformation and if the case of EAA is proof, it's likely Kenya was singlehandedly funding all these enterprises.
Afterall, only Kenya has been consistently keen on a successful East Africa Community.