I am changing the title of this story and some of the description because there is not a "Choose Local Folder" option for this feature, that only applies to stories IGBF-1140 and IGBF-1157. I am doing this to avoid confusion in the future.

Fixed the issue.
I have tested UI change on windows machine. Import bookmark functionality is working as expected with new file chooser dialog.
Needs testing in Linux and Mac environment.

Fix for review purpose can be found on my fork:
https://bitbucket.org/ashwiniK27/integrated-genome-browser/commits/26d8cf5fa0cfb0bdee6d85827bf2df86476826c3?at=IGBF-1152

1st review - 1

Tested on Linux, import bookmark uses proper filechooser and functions normally. Exported a bookmark then imported it to test. Uploaded screenshot.

Is there a ticket for the export file chooser? I didn't see one, but I also didn't look very hard. Export bookmark is using swing chooser.

There is ticket for export functionality IGBF-1153.
I am currently working on it. It is a little more complicated than I thought and taking quite a lot of time.

Ashwini, I have some questions about how to test this issue and related file chooser issues. See email for details. For now, I'm going to put this back in needs 1st level review.
--Ivory

I believe I had conversation with Ivory about this issue and we did verify its functionality on MacOS.
As per my recollection, everything worked fine functionally. It is possible that this issue got overlooked and didn't get moved to next lane.
Just to be sure, Dr. Loraine may test it on MacOS.
Jenny has tested issue on Linux and it worked fine. I have done testing on Windows OS as well.

I tested it again on Mac OS and it import functionality is workings expected.
IGB is able to import bookmarks saved in the format of 'html/htm/xhtml'. Import bookmark window UI is changed as expected.
Moving this issue to 'Ready for Pull Request' lane.

Submitted Pull request