Add this to mission.lst and imperial.lst in the campaign folder.

6
impintel.lst
Death, Deceit, and Punishment

Copy impintel.lst to the campaign folder as well.

Add this to mission.lst and imperial.lst in the Balance of Power train folder.

//
[Impintel Campaign]
//
300
* 6 0 stab1.tie
First Strike
301
* 6 0 stab2.tie
Second Strike
302
* 6 0 stab3.tie
Capture Police Vessels
303
* 6 0 stab4.tie
Infiltrate and Capture
304
* 6 0 stab5.tie
Ambush NR relief force
305
* 6 0 stab6.tie
Destroy Patarian Patrol
306
* 6 0 stab7.tie
Destroy Investigators
307
* 6 0 stab8.tie
Simulate Counter-strike
308
* 6 0 stab9.tie
Capture Kinteaf Peace Envoy
309
* 6 0 stab10.tie
Attack Liner
310
* 6 0 stab11.tie
Protect Civilians
311
* 6 0 stab12.tie
Assist Police
312
* 6 0 stab13.tie
Patrol Summit
313
* 6 0 stab14.tie
Joint Strike on Pirates
314
* 6 0 stab15.tie
Attack Patarians
315
* 6 0 stab16.tie
Attack Kinteaf
316
* 6 0 stab17.tie
Kidnap Patarian Leader
317
* 6 0 stab18.tie
Meeting of Leaders
318
* 6 0 stab19.tie
Defeat NR rescue attempt
319
* 6 0 stab20.tie
Agitation mission
320
* 6 0 stab21.tie
Warn the Fleet
321
* 6 0 stab22.tie
Recapture "Pirate" Ships
322
* 6 0 stab23.tie
Supply Convoy Strike
323
* 6 0 stab24.tie
Delay NR Fleet
324
* 6 0 stab25.tie
Imperial Stand