I had purchased a subscription to the Migration software recommended, While the export went beautifully and without issue, the import was not so easy. the old QBO company files were missing information that made it impossible to import. No offense to QBO but their import tool is all but worthless for any sort of large import. One export alone was over 7000 lines and the QBO import tool would only import 1000 at a time. Add to that the fact that the first line of the import file has to be the column header so you have to delete the report header that QBO automatically includes, delete the Column A and then wade through and remove the blank line spacer between different transactions and the merge became too cumbersome.
While I didn't end up doing so, it was theorized that the best way to combine the company files would be to convert from QBO to QBDT, then once verified all data is present in the QBDT file, download that company file and upload to the other QBO file. Of course, that would require a subscription to the QBDT software in addition to the QBO subscription.
