The filing is a retro-look. In other words it reports what has already happened. If something is yet to happen, it would not be included in the filing, unless it falls into the criteria to belong in the footnotes. Knowing that GAAP rules are conservative, and most companies usually only list required forward looking liability contingencies in the footnotes*, the thought that CRQE is holding off filing due to a future acquisition seems outside of the box.
If something has happened either before or after the date of the required filing, such as an acquisition, contractual agreement for an acquisition, or financing for an acquisition, CRQE would be required to announce this within four business days IAW the SEC rules. Since this has not happened, then there must be another reason they are going to be late with their filing.
*Note: There are other items and issues listed in the footnotes, but I am referring to the CRQE matter discussed here.