Hey there!
I took a look and it seems that this pack along with my Table Duplicator pack both don’t work well when grouping is on the tables.
I ungrouped your tables and tested a few rows and it worked just fine!
Maybe try to have a hidden PROJECT TASKS table that has no grouping on it, and fire the automation off that table (and use its grid/table ID in your buttons)
Then, because you will need grouping for your users, make a VIEW of the original table that your users interact with.
Let me know if that makes sense!