Calc: Spin buttons disappeared upon reopening, saved as xlsx

[mcsimenc]

I created a spreadsheet with 285 spin buttons and painstakingly (half-joking) configured them all. I saved the sheet as xlsx to send to my colleagues. Today I opened it to make a correction and all of the spin buttons are gone. Could they be hidden somewhere, or maybe the xlsx translator doesn’t do spin buttons? Thank you!

Version: 24.8.5.2 (X86_64) / LibreOffice Community
Build ID: 480(Build:2)
CPU threads: 12; OS: Linux 6.12; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
24.8.5-3
Calc: threaded

[EarnestAl]

I guess that LibreOffice cannot create the proprietary Active X controls that Excel uses.
This FAQ might give some background, Faq/General/118 - The Document Foundation Wiki

Also Differences between the OpenDocument Spreadsheet (.ods) format and the Excel for Windows (.xlsx) format - Microsoft Support

[Regina]

It is not clear to me what kind of object you mean by “spin button”. Please attach a spreadsheet which has such “spin button”. Do not save to xlsx but save to ods.