Hi! You are right that the current seasons are incorrect. The episodes should be in a single season because the original series has 148 continuous episodes without any arcs or seasons splits: http://www.ntv.co.jp/hunterhunter/story/backnumber.html Since moving all the data manually would take at least a few hours for each series, we created a list of anime series that will eventually be automatically merged by Travis. Hunter x Hunter is already on that list.

The Contribution Bible has a section on animes explaining how and when the series should be cut. We use the Episode Groups for all the different alternative orders including foreign seasons, DVD volumes, and all the different arcs.

The name of the Episode Group is only to let others know what it is. So, for example, one group can be the French Arcs and another the Netflix Order. Each Episode Group holds one or various groups of episodes. These are our "seasons". I edited the French arcs based on Wikipedia. You can do the three Netflix seasons if you want. Just click on a group (Season 1, Season 2, Season 3) to add the episodes.

Edit 12/05: I added the episodes to the Netflix group.