to not occur vs issue not occur

Some examples from the web:

• It has not occurred to me and will continue to not occur to me.
• Switching from other fentanyl containing products to Rapinyl must not occur at a 1:1 ratio because of different absorption profiles.
• I fully agree with the report that further integration, notably in the retail market segments, should not occur to the detriment of consumers.
• It did not occur to anyone to have a unilateral commitment for the European Union.
• Hungarians and Slovaks live in peace in our area and it does not occur to anyone to malign or attack one another on grounds of nationality.
• Campylobacteriosis is a very common disease among humans in northern Europe but does not occur to any significant extent in the south.
• It would not occur to anyone, least of all me, to dispute the usefulness of NATO.
• No, that did not occur to me.
• It did not occur to me, sir, that you needed elucidation on this front.
• It would not occur to the French today to deny that a Corsican problem exists, even if the French citizens and their government are divided on the solutions.
• Patients should be instructed that dose escalation is not to occur if any rash occurs during the two-week lead-in dosing period, until the rash resolves.
• We must keep to this sequential order if democratic rights are not to be undermined here and power imbalances are not to occur.
• It is not known to occur in the Union.
• A topical overdose is not likely to occur or to be associated with toxicity.
• Some undesirable effects have been reported since marketing of Aprovel but the frequency for them to occur is not known.
• Some undesirable effects have been reported since the marketing of CoAprovel but the frequency for them to occur is not known.
• Some undesirable effects have been reported since marketing of Irbesartan BMS but the frequency for them to occur is not known.
• In the case of output components that belong to the engine system, the OBD system shall at a minimum detect electrical circuit failures, and, where feasible, if the proper functional response to computer commands does not occur.
• Does it not occur to the Commission that terrorists probably are more aware of the Regulation than your average passenger and will therefore act accordingly?
• When she invited us to a Greek wine evening, I fully agreed with her - and I hope I was not alone in this - that it would not occur to anyone to make the wine proffered to us there into pure spirit.

Some examples from the web:

• It's what we do when an issue occurs which requires debate.
• In other words, the Commission will attempt, as a matter of principle, to resolve any competition issues that might occur, firstly by amending the existing agreements, taking into account the economic benefits they bring.
• have an excellent knowledge of the principal legal and practical issues which can occur in the fight against fraud and criminal proceedings in this area,
• Does the Council plan to propose a concrete strategy on how to fight single-issue terrorism which occurs across the borders of EU Member States?
• If you are part of the European Union it has to have some powers, and certainly we are sending out a message to the markets and the citizens that we can deal with crucial issues when they occur.
• However, the process did not occur as expected, in particular, due to the reservations expressed by two Member States, Germany and Sweden, concerning issues related to tax evasion.
• As this is not an EU matter, this issue was never placed on the agenda and this will not occur under the Portuguese Presidency in any formal Council body.
• I would like to ask you whether you could ask the President to issue an official denial, so that this type of extremely negative and damaging reporting will not occur in future.
• If the statutory or contractual provisions governing undated instruments provide for a moderate incentive for the credit institution to redeem as determined by the competent authorities, such incentive shall not occur before ten years after the date of issue.
• Regeneration shall not occur during this engine-conditioning phase.
• Regeneration shall not occur during the engine warm-up.
• Re-injections should not occur before 12 weeks.
• If phase separation does not occur add approximately 10 ml ethanol (3.1) to break the emulsion.
• Activities where transmission does not occur via airborne route.
• Regeneration must not occur during the preparation of the vehicle.
• In this event, the consequences resulting from a claim under the guarantee would not occur.
• In the present case this would however not occur.
• These values may be reached, but do not occur permanently.
• Such a situation did not occur at 31 December 2003.
• Such things should not occur among partners.