Although i live in Scotland have been over to Northern Ireland since I was a wee boy and well travelled the rails. Anyway there have been decisions made that were expensive then changed back years later. Here are a couple of examples.
A number of years ago the service from Belfast to Londonderry was altered. The company decided to re-route the service from it's more direct route and the trains then travelled south of Belfast (and away from Londonderry) down to Lisburn then back up via the Crumlin branch to the Londonderry line so south of Antrim ceased. This however added a distinctive added time to the journey and not helped by the detour south and the limited speed on the Crumlin branch. Then later as time passed this decision was reversed and the track north of Belfast re-done thus going back to the original!.
Secondly in the city centre the short track to Great Victoria Street Station closed and the rails to the junction lifted meaning folk had to get to the new Central Station at an inconvenient place on the edge of the city centre. Nearly two decades later tjry relaid from the junction back into the city centre and a new Gt Victoria St station.
A number of years ago the service from Belfast to Londonderry was altered. The company decided to re-route the service from it's more direct route and the trains then travelled south of Belfast (and away from Londonderry) down to Lisburn then back up via the Crumlin branch to the Londonderry line so south of Antrim ceased. This however added a distinctive added time to the journey and not helped by the detour south and the limited speed on the Crumlin branch. Then later as time passed this decision was reversed and the track north of Belfast re-done thus going back to the original!.
Secondly in the city centre the short track to Great Victoria Street Station closed and the rails to the junction lifted meaning folk had to get to the new Central Station at an inconvenient place on the edge of the city centre. Nearly two decades later tjry relaid from the junction back into the city centre and a new Gt Victoria St station.