Here's a list of considerations to refer to when you use the Anaplan Excel Add-in.

Version upgrade To upgrade to the latest version of the Excel Add-in, refer to: Upgrade your Excel Add-in.
Cell extract count limit There is a limit of 1,000,000 cells per worksheet. However, there is no limit to the number of worksheets you can use to display Anaplan data in a workbook.
Cell range In order to include a cell range in a Refresh, keep the cell range together at all times, rather than break or split it.
List size limit We only support lists up to 1,000,000 items. If a list is longer than this, it can't be loaded in Excel.
Totals display at the bottom of lists Totals only display at the bottom of lists in the Excel Add-in.
Subsidiary views Subsidiary views aren't available. You can connect to a module with subsidiary views in it, but the Excel Add-in will detect these and filter them out.
Slightly slower speeds on first extract or refresh The first extract, or refresh of data from Anaplan into the Add-in may take a few seconds. Once the data is loaded into memory, future extracts or refreshes of the same connection will be quicker.
Once extracted to a grid location, Anaplan data cannot be moved The location of extracted data is determined by the starting cell you select when you make a connection. If you try to move the grid or copy data to another worksheet (or another location within the same worksheet), the connection to Anaplan breaks.
Office Online in Office 365 The Excel Add-in only works on Office 365, Office 2010, 2013, and 2016 installed locally on a PC.
Localization The Excel Add-in only supports English.
Brought-Forward For a Brought-Forward configuration for a line item that is changed in a module, and you click Refresh:
The change displays in the Excel Add-in after you've logged out and logged in again.
If you do not interact with the Excel Add-in for more than 30 minutes you are automatically logged out. Next time you log in, the change is applied.
Excel 2010 dropdown issues Users using Excel 2010 may occasionally experience issues with drop-down lists in the Pivot and Filter dialog. Once you select a dimension to include on a Page, you are unable to use the drop-down list again to select or deselect another item. If the ribbon becomes unresponsive, log out then log in again.
Connect to an Anaplan module If you upgrade from Excel Add-in version 2.6 to version 3.0 or higher, you can connect to a module directly, without having to connect via a saved view.
File compatibility for different versions If you open a set of files in a higher version, you can no longer use those files in an earlier version.
Version 2.6 Version 2.6 is the only version that can coexist with version 3.0 or higher.
Formatting and style settings You can choose to apply Anaplan styles and formatting in a worksheet. However, you need to apply either all Anaplan styles and formatting, or not apply any Anaplan formatting at all.
Keep Excel Formatting checkbox If you select the Keep Excel Formatting checkbox, no changes in Anaplan formatting are inherited by Excel when you click Refresh.
Install C++ message showing during uninstall During the uninstall process for version 3.0, you may see a notification that asks you to install C++. If you see this message, visit our Customer Care pages for guidance on resolving this issue. If you still experience issues after following this advice, contact Anaplan Support.
Workbook functionality When you apply functionality, it only applies to the workbook you're in at the time.
Multi-Sheet connection We recommend you keep to within 20 Excel worksheets or at the most, 25, for each Multi-Sheet connection for optimum performance.