Lotus says that it is easy to share files among the different versions of 1-2-3.
Lotus has said that the next version of the program, called Notes 4.0, is intended to be marketed later this year.
Lotus also says that, over time, the majority of its suite customers use most of what they've paid for.
Lotus said it hopes to complete the acquisition by year-end.
Lotus and other companies that already hold the high ground say good fences, in the legal sense, make for good neighbors.
Lotus said its new 1-2-3 computer program would be delayed for six to nine months.
Lotus said 1-2-3 for Windows would be available from retailers as of Sept. 3.
Lotus said revenue should grow as new versions of key products begin shipping later in the year.
Lotus had said it would bring in a partner by the end of September to help finance debt.
Lotus said sales this year should reach $680 million.