SICSR-17571

[SICSR-17571] Accounting Period from date looks incorrect if the worksheet is imported through external file
Product Line:	P&C
Component/s:	Accounting Technical Worksheet
Affects Version/s:	SICS 4.9.4 SSP1
Fix Version/s:	SICS 20.1
**Issue Links: **	duplicates SICSR-16317
Customer:	China Re