I have an index/match formula that matches a specific file based on the date value of certain cells. Here\'s the formula:
=IFERROR(INDEX(INDIRECT(\"\'\"&
Your formula is not being recalculated because its arguments do not change. The solution is, as you already figured out by yourself, to re-enter the proper arguments into cells that your formula references to.
Google Sheets formulas are recalculated when
Note: Some functions and custom functions doesn't allow not deterministic functions as arguments.