What kind of field is this?
Is this a global field formatted as a drop down list or Pop Up menu for selecting the desired cycle?
Is there then a script trigger that performs a find or Go To Related recors to pull up the desired cycle?
If so, is there then an "all" option in this list for showing all records?
Do you have FileMaker advanced? (This would allow a custom menu based fix for this issue.)
Global text field with a pop up menu that runs a grooming script based on the selected operating cycle. (script trigger OnObjectModify). There is an All Proposals option to display all proposals. I have Advanced, but some of my users have generic FileMaker Pro 11.
As long as you have advanced, you can set up a custom menu. (It will work with non-advanced, you just have to open the file with advanced to make any changes you might need to make to the custom menu.)
In your custom menu for this layout, you can either remove the Show All Option or you can replace it with a script that includes a step to update your global with the "all proposals" option when they select Show All, click it's icon or use the keyboard shortcut for it.