After loading 1 set of input/output, if I change input/output targets, the app still is updating to the output 1 destination

After tiling 1 PDF, if I tile a second project by changing the "Select Input As" and "Save Output As" fields, the second project information is not taken up by the app. The generated tiled PDF is still going to the first project "Save Output As" destination. This feels like a simple fix with the input listeners on those fields, I am happy to contribute a pull request.

Thanks for creating the project. I've gotten much utility out of it in my foray into projector sewing.

Reproduce the issue by tiling one PDF, changing the "Select Input As" and "Save Output As" fields, and tiling a second project. Start by tracing the input listeners on those fields. Done means the second tiled PDF uses the second project's input and output destinations rather than the first project's destination.

Written by the indexing model from the issue text.