In NAV 2015 the Next Counting Period was replaced by 2 date fields after I reported it. The field was used to store the date filter for the next counting period, but if you used counting cycles and had users with different date setting in their regional settings you quickly got quite the mess to figure out. You should of course never store Date filters in text fields unless they are used with in the same transaction ensuring that the user have not changed regional settings in the meantime.
After this was done the Field “Next Counting Period” Text(250) which exist in Table 7380 Field 8, Table 5700 Field 7382 & Table 27 Field 7382 was never removed in 2015. It is not used in the code or in the UI to my knowledge, so maybe it is time to clear it up and get rid of it permanently.
Should there be a need to display the date filter we can always display it based on the 2 new date fields by calculating it on the fly which would ensure it is consistent with the uses current regional settings.
It is a low impact issue as the field has no use today and it is easy to fix not to mention it reduces record length of a tables considerable.