Hello,
I use an Excel sheet to log the MTD sales data and performance reports. And at the end of each month, I upload the excel sheet via the Data Import under Advanced Settings for PowerApps.
When I do an import via Excel sheet, whether it's in the table itself OR advanced settings with field mappings, it does it.
When I paste the information directly into the PowerApps table, the date is correct. Or when I manually add it as a new row, it's correct. The issue with this method is I have a lot of data coming in and I don't want to upload it until the end of the month. I use the table for MoM and YoY data. And pasting it directly into the table is extremely slow and buggy and often times gets stuck on a saving loop that doesn't end up saving the table. So I find the import is the best way and map the fields accordingly, but constantly have to go back and change the date.
2023 imports as 2019. And my worry is next year it's going to import as 2020 and I have sales data with 2020 in there.