+1 - although I've only witnessed it coinciding with a conflict state.
If in investment and war/civil war the conflict will be in ceasefire until the investment clears. I'm a little hazy on the minimum conflict period in those circumstances (not sure if the clock stops or whether there is a 3 day min after the investment clears).
Given Expansion trumps other nonconflict states (e.g boom etc), but Expansion is overriden by a Conflict state, it seems likely Investment has the same override level as Expansion, therefore it couldn't occur with other states active.
Quick unrelated question RE: Superpower bounties... I've read a bit about how bounties confer influence to the factions who are subscribed to that superpower (seen as a nerf for independents etc)... either I've missed this in the discussions or I'm just daft.
If there's two federal factions, one with 25% inf and the other with 50% inf, and I hand in some Federal superpower bounties at a station.... how is the influence gain distributed?
Equally? i.e after tick, factions would be 27% and 52%, with reductions in all other factions;
Proportionally? i.e after tick, factions would be 26% and 53%, with reductions in all other factions; or
Reverse proportionally? i.e after tick, factions would be 28% and 51%, with reductions in all other factions